The Common Descent Podcast - Common Descent

Episode 203 - Rodents Oct 26, 2024

Mice, rats, beavers, and more! Rodents are some of the most diverse and successful mammals on the planet. This episode, we discuss what traits make rodents special, and we explore their incredible living diversity. Then we’ll take a trip to the past to investigate early rodent evolution, some highlights of their fossil record, and some of their ancient competitors.

In the news: Arthropleura’s head, raptorial birds, dinosaur eggs, and evolution education.

Time markers:
Intro & Announcements: 00:00:00
News: 00:05:50
Main discussion, Part 1: 00:38:25
Main discussion, Part 2: 01:28:15
Patron question: 02:14:25

Check out our website for this episode’s blog post and more: http://commondescentpodcast.com/

Join us on Patreon to support the podcast and enjoy bonus content: https://www.patreon.com/commondescentpodcast

Got a topic you want to hear about? Submit your episode request here: https://commondescentpodcast.com/request-a-topic/

Lots more ways to connect with us: https://linktr.ee/common_descent

The Intro and Outro music is “On the Origin of Species” by Protodome. More music like this at http://ocremix.org

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0 http://creativecommons.org/licenses/by/3.0

Spook-E - Redcaps Oct 26, 2024

Welcome ... to Spookulative Evolution.

October is Spook-E Season on Common Descent! Each episode, we pick monsters from fiction and fable and ponder how they – or something like them – could evolve here on Earth, pulling inspiration from real-world species across our planet’s history. This year’s theme is Tiny Monsters.

This episode, there’s trouble afoot. How could biological processes generate ornery little fiends with gruesome headgear? Our creatures to create this time: Redcaps.

Join the Common Descent Discord server for more Spook-E discussion! https://discord.gg/CwPBxdh9Ev

Join us on Patreon to support the podcast and enjoy bonus content: https://www.patreon.com/commondescentpodcast

More ways to connect with us: https://linktr.ee/common_descent

Got a topic you want to hear about? Submit your episode request here: https://commondescentpodcast.com/request-a-topic/

We’re an Audible Affiliate Partner! Use this link for a 30-day free trial to Audible: https://www.audibletrial.com/CommonDescent

The Intro and Outro music is “On the Origin of Species” by Protodome. More music like this at http://ocremix.org.

Spook-E - Salamanders Oct 19, 2024

Welcome ... to Spookulative Evolution.

October is Spook-E Season on Common Descent! Each episode, we pick monsters from fiction and fable and ponder how they – or something like them – could evolve here on Earth, pulling inspiration from real-world species across our planet’s history. This year’s theme is Tiny Monsters.

This episode, things heat up a bit. What selective pressures might lead to the evolution of skittering creatures with a fondness for fire? Our creatures to create this time: the mythical Salamanders.

Join the Common Descent Discord server for more Spook-E discussion! https://discord.gg/CwPBxdh9Ev

Join us on Patreon to support the podcast and enjoy bonus content: https://www.patreon.com/commondescentpodcast

More ways to connect with us: https://linktr.ee/common_descent

Got a topic you want to hear about? Submit your episode request here: https://commondescentpodcast.com/request-a-topic/

We’re an Audible Affiliate Partner! Use this link for a 30-day free trial to Audible: https://www.audibletrial.com/CommonDescent

The Intro and Outro music is “On the Origin of Species” by Protodome. More music like this at http://ocremix.org.

Episode 202 - Fungi and Animals Oct 12, 2024

It’s the final part of our fungal trilogy!

Fungi and animals interact in a wide variety of ways, from parasitism to partnership to predation. This episode, we explore how fungi and animals have evolved alongside each other and the adaptations they have developed to take advantage of each other, and we’ll examine how far back we can find these fungus-animal interactions in the fossil record.

In the news: pterosaur feet, sauropod tails, a Cretaceous crater, and fossil fireflies.

Time markers:
Intro & Announcements: 00:00:00
News: 00:13:20
Main discussion, Part 1: 00:44:10
Main discussion, Part 2: 01:35:15
Patron question: 02:42:00

Check out our website for this episode’s blog post and more: http://commondescentpodcast.com/

Join us on Patreon to support the podcast and enjoy bonus content: https://www.patreon.com/commondescentpodcast

Got a topic you want to hear about? Submit your episode request here: https://commondescentpodcast.com/request-a-topic/

Lots more ways to connect with us: https://linktr.ee/common_descent

The Intro and Outro music is “On the Origin of Species” by Protodome. More music like this at http://ocremix.org

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0 http://creativecommons.org/licenses/by/3.0

Spook-E - Fairies Oct 12, 2024

Welcome ... to Spookulative Evolution.

October is Spook-E Season on Common Descent! Each episode, we pick monsters from fiction and fable and ponder how they – or something like them – could evolve here on Earth, pulling inspiration from real-world species across our planet’s history. This year’s theme is Tiny Monsters.

This episode, we explore a favorite of fanciful fables. How might natural selection produce diminutive humanoids with a knack for mischief and mayhem? Our creatures to create this time: Fairies.

Join the Common Descent Discord server for more Spook-E discussion! https://discord.gg/CwPBxdh9Ev

Join us on Patreon to support the podcast and enjoy bonus content: https://www.patreon.com/commondescentpodcast

More ways to connect with us: https://linktr.ee/common_descent

Got a topic you want to hear about? Submit your episode request here: https://commondescentpodcast.com/request-a-topic/

We’re an Audible Affiliate Partner! Use this link for a 30-day free trial to Audible: https://www.audibletrial.com/CommonDescent

The Intro and Outro music is “On the Origin of Species” by Protodome. More music like this at http://ocremix.org

Spook-E - Gremlins Oct 05, 2024

Welcome ... to Spookulative Evolution.

October is Spook-E Season on Common Descent! Each episode, we pick monsters from fiction and fable and ponder how they – or something like them – could evolve here on Earth, pulling inspiration from real-world species across our planet’s history. This year’s theme is Tiny Monsters.

This episode, we’ve chosen a modern classic. How might we evolve adorable fluffy critters that transform into dangerous troublemakers? Our creatures to create this time: Gremlins.

Join the Common Descent Discord server for more Spook-E discussion! https://discord.gg/CwPBxdh9Ev

Join us on Patreon to support the podcast and enjoy bonus content: https://www.patreon.com/commondescentpodcast

More ways to connect with us: https://linktr.ee/common_descent

Got a topic you want to hear about? Submit your episode request here: https://commondescentpodcast.com/request-a-topic/

We’re an Audible Affiliate Partner! Use this link for a 30-day free trial to Audible: https://www.audibletrial.com/CommonDescent

The Intro and Outro music is “On the Origin of Species” by Protodome. More music like this at http://ocremix.org.

Spotlight 2024 - Dave Marshall, Palaeocast Oct 02, 2024

Welcome to Spotlight 2024! In this series, we’re sitting down with our fellow paleo-podcasters to discuss Science Communication.

This episode, we’re joined by one of the longest-running paleo-podcast hosts around: Dave Marshall from Palaeocast!

Find Palaeocast here:
https://www.palaeocast.com/

Connect with Common Descent: https://linktr.ee/common_descent

Join us on Patreon to support the podcast and enjoy bonus content: https://www.patreon.com/commondescentpodcast

Got a topic you want to hear about? Submit your episode request here: https://commondescentpodcast.com/request-a-topic/

We’re an Audible Affiliate Partner! Use this link for a 30-day free trial to Audible: https://www.audibletrial.com/CommonDescent

The Intro and Outro music is “On the Origin of Species” by Protodome. More music like this at http://ocremix.org.

Episode 201 - Fungi and Plants Sep 28, 2024

Our fungal celebration continues!

The relationship between fungi and plants is one of the most famous and consequential connections in biological history. This episode, Aly is here to help us explore how fungi and plants work together and work against each other, what we know about the deep history of their relationship, and how fungi and plants together have shaped the world as we know it.

Fungi will return…

In the news: toothy birds, polar forests, coelacanth evolution, and a Pennsylvanian lagerstatte.

Time markers:
Intro & Announcements: 00:00:00
News: 00:07:35
Main discussion, Part 1: 00:36:40
Main discussion, Part 2: 01:40:15
Patron question: 02:40:30

Follow Aly online at @PaleoLorax

And go check out Flora Funga Podcast at www.florafungapodcast.com and on social media at @florafungapodcast

Check out our website for this episode’s blog post and more: http://commondescentpodcast.com/

Join us on Patreon to support the podcast and enjoy bonus content: https://www.patreon.com/commondescentpodcast

Got a topic you want to hear about? Submit your episode request here: https://commondescentpodcast.com/request-a-topic/

Lots more ways to connect with us: https://linktr.ee/common_descent

The Intro and Outro music is “On the Origin of Species” by Protodome. More music like this at http://ocremix.org

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0 http://creativecommons.org/licenses/by/3.0

Patron Mini-Episode Compilation #5 Sep 22, 2024

Mini-episodes are rewards for our high-level supporters on Patreon, each one focusing on a requested topic for a specific Patron. From time to time, we combine a bunch of these and release them as a bundle for all our listeners to enjoy. Enjoy!

A huge thanks as always to our Patrons for their kind contributions to our education efforts.

Intro: 00:00:00
T. rex for Sam – 00:02:02
Okapis for Sarah May – 00:30:00
Cicadas for Danielle – 00:48:43
Ants for Robert – 01:13:40
Polychaetes for Joshua – 01:39:01
Pangolins for KitKat – 02:04:28

Join us on Patreon to support the podcast and perhaps request your own mini-episode!
https://www.patreon.com/commondescentpodcast

Got a topic you want to hear about? Submit your episode request here: https://commondescentpodcast.com/request-a-topic/

We’re an Audible Affiliate Partner! Use this link for a 30-day free trial to Audible: https://www.audibletrial.com/CommonDescent

Lots more ways to connect with us: https://linktr.ee/common_descent

The Intro and Outro music is “On the Origin of Species” by Protodome. More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0 http://creativecommons.org/licenses/by/3.0/

Episode 200 - Fungi Sep 14, 2024

Here it is! The most requested episode topic in the history of the podcast!

Fungi are everywhere. This episode, we explore how fungi work, what makes them different from other organisms, and how they achieve a wide variety of lifestyles all over the world. We’ll also look back at their evolutionary history and fossil record to explore some of the most significant fungal moments of Earth’s past.

Fungi will return…

In the news: dinosaur teeth, pterosaur flight, bit bones, and ancient thylacines.

Time markers:
Intro & Announcements: 00:00:00
News: 00:08:30
Main discussion, Part 1: 00:39:15
Main discussion, Part 2: 01:38:30
Patron question: 02:29:35

Check out our website for this episode’s blog post and more: http://commondescentpodcast.com/

Join us on Patreon to support the podcast and enjoy bonus content: https://www.patreon.com/commondescentpodcast

Got a topic you want to hear about? Submit your episode request here: https://commondescentpodcast.com/request-a-topic/

Lots more ways to connect with us: https://linktr.ee/common_descent

The Intro and Outro music is “On the Origin of Species” by Protodome. More music like this at http://ocremix.org

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0 http://creativecommons.org/licenses/by/3.0

Spotlight 2024 - Gavin, Fia, and Mike, I Wish You Were Dead Sep 04, 2024

Welcome to Spotlight 2024! In this series, we’re sitting down with our fellow paleo-podcasters to discuss Science Communication.

This episode, we chat with Gavin, Fia, and Mike, hosts of I Wish You Were Dead!

Find I Wish You Were Dead in these places:
https://open.spotify.com/show/4lMCmCwK9y9xThOMVUcHiM
https://www.youtube.com/channel/UCbKAuMrj_7PUI0GqU9QQnhg
https://www.facebook.com/IWishYouWereDeadPodcast
www.twitter.com/DeadPodcast_

Connect with Common Descent: https://linktr.ee/common_descent

Join us on Patreon to support the podcast and enjoy bonus content: https://www.patreon.com/commondescentpodcast

Got a topic you want to hear about? Submit your episode request here: https://commondescentpodcast.com/request-a-topic/

We’re an Audible Affiliate Partner! Use this link for a 30-day free trial to Audible: https://www.audibletrial.com/CommonDescent

The Intro and Outro music is “On the Origin of Species” by Protodome. More music like this at http://ocremix.org.

Episode 199 - Hibernation Aug 31, 2024

Sometimes, an animal just needs to power down and wait. Many animals exhibit some form of torpor, including the long-term dormancy of hibernation. This episode, we explore how these species adjust their body functions, we discuss the pros and cons of this surprisingly common biological strategy, and we’ll take a look at what we know about the evolutionary history and fossil record of hibernation.

In the news: walrus diets, ancient weapons, grape evolution, and fossil tardigrades.

Time markers:
Intro & Announcements: 00:00:00
News: 00:10:35
Main discussion, Part 1: 00:40:40
Main discussion, Part 2: 01:31:15
Patron question: 02:13:30

Check out our website for this episode’s blog post and more: http://commondescentpodcast.com/

Join us on Patreon to support the podcast and enjoy bonus content: https://www.patreon.com/commondescentpodcast

Got a topic you want to hear about? Submit your episode request here: https://commondescentpodcast.com/request-a-topic/

Lots more ways to connect with us: https://linktr.ee/common_descent

The Intro and Outro music is “On the Origin of Species” by Protodome. More music like this at http://ocremix.org

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0 http://creativecommons.org/licenses/by/3.0

Episode 198 - Eels Aug 17, 2024

Eels are long-bodied fish found in a variety of aquatic habitats, famous for their unusual body plans, distinctive life cycles, and occasional anatomical oddities like extra jaws. This episode, we’re joined by special guest Shay Maden to discuss the diversity, evolution, and fossil history of the true eels of the Order Anguilliformes, and we’ll also make mention of other famous “eels” and the repeated evolution of the eel-like body shape.

In the news: dog brains, giant beans, marine crocs, and opening oceans.

Time markers:
Intro & Announcements: 00:00:00
News: 00:07:50
Main discussion, Part 1: 00:40:30
Main discussion, Part 2: 01:17:30
Patron question: 01:44:55

Check out our website for this episode’s blog post and more: http://commondescentpodcast.com/

Join us on Patreon to support the podcast and enjoy bonus content: https://www.patreon.com/commondescentpodcast

Got a topic you want to hear about? Submit your episode request here: https://commondescentpodcast.com/request-a-topic/

Lots more ways to connect with us: https://linktr.ee/common_descent

The Intro and Outro music is “On the Origin of Species” by Protodome. More music like this at http://ocremix.org

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0 http://creativecommons.org/licenses/by/3.0

Spotlight 2024 - Meredith Johnson, Origin Stories Aug 07, 2024

Welcome to Spotlight 2024! In this series, we’re sitting down with our fellow paleo-podcasters to discuss Science Communication.

This episode, another returning guest: Meredith Johnson, host of Origin Stories, the Leakey Foundation podcast!

Find Origin Stories here:
https://leakeyfoundation.org/learn/originstories/

Connect with Common Descent: https://linktr.ee/common_descent

Join us on Patreon to support the podcast and enjoy bonus content: https://www.patreon.com/commondescentpodcast

Got a topic you want to hear about? Submit your episode request here: https://commondescentpodcast.com/request-a-topic/

We’re an Audible Affiliate Partner! Use this link for a 30-day free trial to Audible: https://www.audibletrial.com/CommonDescent

The Intro and Outro music is “On the Origin of Species” by Protodome. More music like this at http://ocremix.org.

Episode 197 - Durophagy (Eating Hard Stuff) Aug 03, 2024

Some animals are specialists at eating particularly tough foods like shells, seeds, and bones. Adaptations for a durophagous diet come in many forms in almost all major groups of life. This episode, we discuss how so many animals tackle tough foods, what behaviors and anatomy help them to do it, and the importance of durophagy for understanding fossils and the history of Earth ecosystems.

In the news: fossil boas, walking fish, cooked birds, and early arthropods.

Time markers:
Intro & Announcements: 00:00:00
News: 00:08:15
Main discussion, Part 1: 00:45:50
Main discussion, Part 2: 01:28:45
Patron question: 02:06:30

Check out our website for this episode’s blog post and more: http://commondescentpodcast.com/

Join us on Patreon to support the podcast and enjoy bonus content: https://www.patreon.com/commondescentpodcast

Got a topic you want to hear about? Submit your episode request here: https://commondescentpodcast.com/request-a-topic/

Lots more ways to connect with us: https://linktr.ee/common_descent

The Intro and Outro music is “On the Origin of Species” by Protodome. More music like this at http://ocremix.org

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0 http://creativecommons.org/licenses/by/3.0

Episode 196 - Boas and Pythons Jul 20, 2024

Boas and pythons include some of the most famous snake species on Earth, renowned for their incredible tropical diversity, their often beautiful scale patterns, and their often impressive size. This episode, we discuss what sets these two lineages apart from other snakes – and each other – and we explore the evolutionary path recorded in their fossil record.

In the news: giant early tetrapods, digging dinosaurs, coastal croc-cousins, and striking snakes.

Time markers:
Intro & Announcements: 00:00:00
News: 00:08:15
Main discussion, Part 1: 00:37:40
Main discussion, Part 2: 01:30:10
Patron question: 02:16:10

Check out our website for this episode’s blog post and more: http://commondescentpodcast.com/

Join us on Patreon to support the podcast and enjoy bonus content: https://www.patreon.com/commondescentpodcast

Got a topic you want to hear about? Submit your episode request here: https://commondescentpodcast.com/request-a-topic/

Lots more ways to connect with us: https://linktr.ee/common_descent

The Intro and Outro music is “On the Origin of Species” by Protodome. More music like this at http://ocremix.org

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0 http://creativecommons.org/licenses/by/3.0

Episode 195 - Leaves Jul 06, 2024

Leaves. They’re everywhere. They’re the main photosynthesizing organs of plants, and they’re the main source of green on our green-and-blue planet. Leaves come in a truly dizzying variety of shapes, sizes, and specialized functions, and their early evolution laid the foundation for terrestrial ecosystems as we know them. This episode, Aly joins us yet again to talk about the anatomy and diversity of leaves and the incredible information we can learn from leaves in the fossil record.

In the news: croc cousins, horned dinosaurs, dinosaur myths, and fish brains.

Time markers:
Intro & Announcements: 00:00:00
News: 00:07:40
Main discussion, Part 1: 00:42:30
Main discussion, Part 2: 01:36:00
Patron question: 02:54:30

Follow Aly online at @PaleoLorax

Check out our website for this episode’s blog post and more: http://commondescentpodcast.com/

Join us on Patreon to support the podcast and enjoy bonus content: https://www.patreon.com/commondescentpodcast

Got a topic you want to hear about? Submit your episode request here: https://commondescentpodcast.com/request-a-topic/

Lots more ways to connect with us: https://linktr.ee/common_descent

The Intro and Outro music is “On the Origin of Species” by Protodome. More music like this at http://ocremix.org

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0 http://creativecommons.org/licenses/by/3.0

Spotlight 2024 - Travis Holland, Fossils and Fiction Jul 03, 2024

Welcome to Spotlight 2024! In this series, we’re sitting down with our fellow paleo-podcasters to discuss Science Communication.

Joining us for this episode is Travis Holland, host of Fossils and Fiction!

Find Travis and Fossils and Fiction in these places:
fossilsfiction.co
travisholland.com.au
https://researchoutput.csu.edu.au/en/persons/tholla05csueduau

Connect with Common Descent: https://linktr.ee/common_descent

Join us on Patreon to support the podcast and enjoy bonus content: https://www.patreon.com/commondescentpodcast

Got a topic you want to hear about? Submit your episode request here: https://commondescentpodcast.com/request-a-topic/

We’re an Audible Affiliate Partner! Use this link for a 30-day free trial to Audible: https://www.audibletrial.com/CommonDescent

The Intro and Outro music is “On the Origin of Species” by Protodome. More music like this at http://ocremix.org.

Episode 194 - Alligators and Caimans Jun 22, 2024

Happy Croc Month!

Alligators and caimans are the living members of the family Alligatoridae. In this episode, we explore how the gator lineage differs from other crocs, and we’ll dive into the fossil record of the extended gator family tree, a history that includes a diversity of species and some of the largest crocodilians to ever live.

In the news: Australian pterosaurs, mega-geese, Neanderthal art, and social ants.

Time markers:
Intro & Announcements: 00:00:00
News: 00:06:45
Main discussion, Part 1: 00:37:55
Main discussion, Part 2: 01:12:45
Patron question: 02:19:50

Check out our website for this episode’s blog post and more: http://commondescentpodcast.com/

Join us on Patreon to support the podcast and enjoy bonus content: https://www.patreon.com/commondescentpodcast

Got a topic you want to hear about? Submit your episode request here: https://commondescentpodcast.com/request-a-topic/

Lots more ways to connect with us: https://linktr.ee/common_descent

The Intro and Outro music is “On the Origin of Species” by Protodome. More music like this at http://ocremix.org

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0 http://creativecommons.org/licenses/by/3.0

Episode 193 - Hopping Jun 08, 2024

Terrestrial animals get around using a variety of gaits: walking, running, galloping, etc. Some of these gaits are particularly bouncy! Hopping comes in many forms in many different groups of animals. This episode, we’ll discuss what makes a particular gait “hoppy,” what functions hopping serves, and what adaptations are found in the best hoppers. Then, we’ll explore what we can tell about hopping in the fossil record.

In the news: dinosaur skin, marine worms, ancient monotremes, and plant-ant relations

Time markers:
Intro & Announcements: 00:00:00
News: 00:06:45
Main discussion, Part 1: 00:36:30
Main discussion, Part 2: 01:19:00
Patron question: 01:50:10

Check out our website for this episode’s blog post and more: http://commondescentpodcast.com/

Join us on Patreon to support the podcast and enjoy bonus content: https://www.patreon.com/commondescentpodcast

Got a topic you want to hear about? Submit your episode request here: https://commondescentpodcast.com/request-a-topic/

Lots more ways to connect with us: https://linktr.ee/common_descent

The Intro and Outro music is “On the Origin of Species” by Protodome. More music like this at http://ocremix.org

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0 http://creativecommons.org/licenses/by/3.0

Spotlight 2024 - Sabrina and Garret, I Know Dino Jun 05, 2024

Welcome to Spotlight 2024! In this series, we’re sitting down with our fellow paleo-podcasters to discuss Science Communication.

Returning to the podcast for this episode are Sabrina and Garret, hosts of I Know Dino!

Find I Know Dino at these places:
https://iknowdino.com
https://www.patreon.com/join/iknowdino
https://pod.link/960976813

Connect with Common Descent: https://linktr.ee/common_descent

Join us on Patreon to support the podcast and enjoy bonus content: https://www.patreon.com/commondescentpodcast

Got a topic you want to hear about? Submit your episode request here: https://commondescentpodcast.com/request-a-topic/

We’re an Audible Affiliate Partner! Use this link for a 30-day free trial to Audible: https://www.audibletrial.com/CommonDescent

The Intro and Outro music is “On the Origin of Species” by Protodome. More music like this at http://ocremix.org.

Episode 192 - Tongues May 25, 2024

Tongues are a common feature among tetrapod animals, but the evolution of this organ is complex and fascinating. Through time, tongues have evolved a wide variety of functions from feeding to sensing to speech. This episode, we’ll explore the diversity of tongues and their bony counterparts in the hyoid apparatus, we’ll examine what’s known about tongue evolution, and we’ll discuss how fossils – especially hyoids – help us interpret the tongues of extinct species.

In the news: dinosaur temperatures, ancient geomagnetism, Martian lake conditions, and splitting sea stars.

Time markers:
Intro & Announcements: 00:00:00
News: 00:08:15
Main discussion, Part 1: 00:39:55
Main discussion, Part 2: 01:24:05
Patron question: 02:02:40

Check out our website for this episode’s blog post and more: http://commondescentpodcast.com/

Join us on Patreon to support the podcast and enjoy bonus content: https://www.patreon.com/commondescentpodcast

Got a topic you want to hear about? Submit your episode request here: https://commondescentpodcast.com/request-a-topic/

Lots more ways to connect with us: https://linktr.ee/common_descent

The Intro and Outro music is “On the Origin of Species” by Protodome. More music like this at http://ocremix.org

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0 http://creativecommons.org/licenses/by/3.0

Episode 191 - Language May 11, 2024

Language is possibly the most important and incredible ability that sets humans apart from other species. Whether spoken, written, or signed, language exists in thousands of varieties among modern human cultures, and there are some very language-like communication systems in other animals, too. This episode, we discuss what defines language, what makes it so special, and what we understand about its history and origins among our ancestors.

In the news: orangutan medicine, frog skin, giant sharks, and dinosaur eggs.

Time markers:
Intro & Announcements: 00:00:00
News: 00:05:15
Main discussion, Part 1: 00:34:35
Main discussion, Part 2: 01:14:25
Patron question: 01:58:00

Find Dr. Alex at https://www.bridgetalex.com/ or @bannelia

Check out our website for this episode’s blog post and more: http://commondescentpodcast.com/

Join us on Patreon to support the podcast and enjoy bonus content: https://www.patreon.com/commondescentpodcast

Got a topic you want to hear about? Submit your episode request here: https://commondescentpodcast.com/request-a-topic/

Lots more ways to connect with us: https://linktr.ee/common_descent

The Intro and Outro music is “On the Origin of Species” by Protodome. More music like this at http://ocremix.org

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0 http://creativecommons.org/licenses/by/3.0

Spotlight 2024 - Dylan Wilmeth, Bedrock May 01, 2024

Welcome to Spotlight 2024! In this series, we’re sitting down with our fellow paleo-podcasters to discuss Science Communication.

This episode, we’re joined by Dylan Wilmeth, host of Bedrock: Earth’s Earliest History!

Find Dylan’s podcast here: https://www.bedrockpodcast.com/

Connect with Common Descent: https://linktr.ee/common_descent

Join us on Patreon to support the podcast and enjoy bonus content: https://www.patreon.com/commondescentpodcast

Got a topic you want to hear about? Submit your episode request here: https://commondescentpodcast.com/request-a-topic/

We’re an Audible Affiliate Partner! Use this link for a 30-day free trial to Audible: https://www.audibletrial.com/CommonDescent

The Intro and Outro music is “On the Origin of Species” by Protodome. More music like this at http://ocremix.org.

Episode 190 - Cicadas Apr 27, 2024

Cicadas are among the most famous insects in the world, and in summer 2024, they’re set to put on quite a show in North America! This episode, we explore the function and evolution of cicadas’ most famous features, including their notoriously loud calls and their incredible life cycles, and we’ll take a peek into the past at the fossil record of cicadas and their ancient cousins.

In the news: giant snakes, big kangaroos, dinosaur amino acids, and echolocation tissues.

Time markers:
Intro & Announcements: 00:00:00
News: 00:03:45
Main discussion, Part 1: 00:39:35
Main discussion, Part 2: 01:18:50
Patron question: 02:00:30

Check out our website for this episode’s blog post and more: http://commondescentpodcast.com/

Join us on Patreon to support the podcast and enjoy bonus content: https://www.patreon.com/commondescentpodcast

Got a topic you want to hear about? Submit your episode request here: https://commondescentpodcast.com/request-a-topic/

Lots more ways to connect with us: https://linktr.ee/common_descent

The Intro and Outro music is “On the Origin of Species” by Protodome. More music like this at http://ocremix.org

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0 http://creativecommons.org/licenses/by/3.0

Silver Screen Science - Jaws Apr 24, 2024

It’s a new series of Silver Screen Science! As usual, we’re discussing how science is portrayed on the big screen, this time with a new theme: Sharks!

It’s a series about shark movies, so how could we skip the most famous and influential shark film of all time? – Jaws.

Check out our website for blog posts and more: http://commondescentpodcast.com/

Join us on Patreon to support the podcast and enjoy bonus content: https://www.patreon.com/commondescentpodcast

Got a topic you want to hear about? Submit your episode request here: https://commondescentpodcast.com/request-a-topic/

We’re an Audible Affiliate Partner! Use this link for a 30-day free trial to Audible: https://www.audibletrial.com/CommonDescent

Lots more ways to connect with us: https://linktr.ee/common_descent

The Intro and Outro music is “On the Origin of Species” by Protodome. More music like this at http://ocremix.org.

Silver Screen Science - Deep Blue Sea Apr 17, 2024

It’s a new series of Silver Screen Science! As usual, we’re discussing how science is portrayed on the big screen, this time with a new theme: Sharks!

This time, we’re exploring the monster sharks and suspicious science of a 90s shark classic – Deep Blue Sea.

Check out our website for blog posts and more: http://commondescentpodcast.com/

Join us on Patreon to support the podcast and enjoy bonus content: https://www.patreon.com/commondescentpodcast

Got a topic you want to hear about? Submit your episode request here: https://commondescentpodcast.com/request-a-topic/

We’re an Audible Affiliate Partner! Use this link for a 30-day free trial to Audible: https://www.audibletrial.com/CommonDescent

Lots more ways to connect with us: https://linktr.ee/common_descent

The Intro and Outro music is “On the Origin of Species” by Protodome. More music like this at http://ocremix.org.

Episode 189 - Dromaeosaurs Apr 13, 2024

This group of predatory dinosaurs includes such famous names as Deinonychus, Microraptor, and Velociraptor, and they’re among the most well-studied and popular dinosaurs of all time. This episode, we’ll discuss what sets these dinosaurs apart, as well the much-discussed and -debated questions surrounding their relationships to birds, their distinctive claws and wings, and their hunting strategies.

In the news: ant-mimic spiders, fishapod spinal column, early dinosaur growth, and a fossil tapeworm.

Time markers:
Intro & Announcements: 00:00:00
News: 00:05:20
Main discussion, Part 1: 00:33:00
Main discussion, Part 2: 01:13:50
Patron question: 02:22:05

Check out our website for this episode’s blog post and more: http://commondescentpodcast.com/

Links mentioned in the announcements:
Palestine Children’s Relief Fund: https://www.pcrf.net/
Jewish Voice For Peace: https://www.jewishvoiceforpeace.org/take-action/

Join us on Patreon to support the podcast and enjoy bonus content: https://www.patreon.com/commondescentpodcast

Got a topic you want to hear about? Submit your episode request here: https://commondescentpodcast.com/request-a-topic/

Lots more ways to connect with us: https://linktr.ee/common_descent

The Intro and Outro music is “On the Origin of Species” by Protodome. More music like this at http://ocremix.org

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0 http://creativecommons.org/licenses/by/3.0

Silver Screen Science - Meg 2: The Trench Apr 10, 2024

It’s a new series of Silver Screen Science! As usual, we’re discussing how science is portrayed on the big screen, this time with a new theme: Sharks!

This episode, we’re examining the newest installment in the film series about giant monster ancient sharks – Meg 2: The Trench.

Check out our website for blog posts and more: http://commondescentpodcast.com/

Join us on Patreon to support the podcast and enjoy bonus content: https://www.patreon.com/commondescentpodcast

Got a topic you want to hear about? Submit your episode request here: https://commondescentpodcast.com/request-a-topic/

We’re an Audible Affiliate Partner! Use this link for a 30-day free trial to Audible: https://www.audibletrial.com/CommonDescent

Lots more ways to connect with us: https://linktr.ee/common_descent

The Intro and Outro music is “On the Origin of Species” by Protodome. More music like this at http://ocremix.org

Spotlight 2024 - James, Amanda, and Curtis, Palaeo After Dark Apr 03, 2024

Welcome to Spotlight 2024! In this series, we’re sitting down with our fellow paleo-podcasters to discuss Science Communication.

It’s episode two, and our guests are the hosts of Palaeo After Dark: James, Amanda, and Curtis!

Find Palaeo After Dark at their website: www.palaeoafterdark.com

Connect with Common Descent: https://linktr.ee/common_descent

Join us on Patreon to support the podcast and enjoy bonus content: https://www.patreon.com/commondescentpodcast

Got a topic you want to hear about? Submit your episode request here: https://commondescentpodcast.com/request-a-topic/

We’re an Audible Affiliate Partner! Use this link for a 30-day free trial to Audible: https://www.audibletrial.com/CommonDescent

The Intro and Outro music is “On the Origin of Species” by Protodome. More music like this at http://ocremix.org.

Episode 188 - Cannibalism Mar 30, 2024

An animal eating another member of its own species might sound like a rare and abnormal occurrence – and it is often portrayed that way – but cannibalism is actually extremely widespread and common in nature. Some animals are occasional cannibals, while some go so far as to rely on this behavior to fuel proper growth and development. In this episode, we’ll discuss some of the varieties of cannibalism, explore how this behavior has been misunderstood and misconstrued in the past, and investigate some evidence from the fossil record.

In the news: toothless Cretaceous birds, giant river dolphins, Alaska dinosaurs, and Kermit the temnospondyl.

Time markers:
Intro & Announcements: 00:00:00|
News: 00:05:50
Main discussion, Part 1: 00:29:30
Main discussion, Part 2: 01:16:45
Patron question: 02:09:15

Check out our website for this episode’s blog post and more: http://commondescentpodcast.com/

Join us on Patreon to support the podcast and enjoy bonus content: https://www.patreon.com/commondescentpodcast

What's The "T" Stand For?: A Let's Learn-A-Saurus Book
https://www.amazon.com/dp/B0CYZJ1QLR

Got a topic you want to hear about? Submit your episode request here: https://commondescentpodcast.com/request-a-topic/

We’re an Audible Affiliate Partner! Use this link for a 30-day free trial to Audible: https://www.audibletrial.com/CommonDescent

Lots more ways to connect with us: https://linktr.ee/common_descent

The Intro and Outro music is “On the Origin of Species” by Protodome. More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0 http://creativecommons.org/licenses/by/3.0/

Episode 187 - Migration Mar 16, 2024

Among the most spectacular of animal behaviors is migration, the habit of many species to undertake massive journeys, sometimes traveling thousands of kilometers to access food or breeding grounds. This episode, we explore the incredible diversity of migratory behaviors, we examine the functions and adaptations that make migration happen, we discuss how migration is defined, and we investigate some of the tools we can use to identify migration in the distant past.

In the news: giant crabs, fossil forests, early cephalopods, and mating termites.

Time markers:
Intro & Announcements: 00:00:00
News: 00:04:40
Main discussion, Part 1: 00:30:15
Main discussion, Part 2: 01:26:00
Patron question: 01:49:35

Check out our website for this episode’s blog post and more: http://commondescentpodcast.com/

Join us on Patreon to support the podcast and enjoy bonus content: https://www.patreon.com/commondescentpodcast

Got a topic you want to hear about? Submit your episode request here: https://commondescentpodcast.com/request-a-topic/

We’re an Audible Affiliate Partner! Use this link for a 30-day free trial to Audible: https://www.audibletrial.com/CommonDescent

Lots more ways to connect with us: https://linktr.ee/common_descent

The Intro and Outro music is “On the Origin of Species” by Protodome. More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0 http://creativecommons.org/licenses/by/3.0/

Spotlight 2024 - Adele Pentland, Pals in Palaeo Mar 06, 2024

Welcome to Spotlight 2024! In this series, we’re sitting down with our fellow paleo-podcasters to discuss Science Communication.

In this first episode, our guest is Adele Pentland, host of Pals in Palaeo!

Find Adele and Pals in Palaeo in these places:
https://adelepentland.com/
https://palsinpalaeo.com/
https://www.instagram.com/palsinpalaeo/
https://www.instagram.com/palaeodel/

Connect with Common Descent: https://linktr.ee/common_descent

Join us on Patreon to support the podcast and enjoy bonus content: https://www.patreon.com/commondescentpodcast

Got a topic you want to hear about? Submit your episode request here: https://commondescentpodcast.com/request-a-topic/

We’re an Audible Affiliate Partner! Use this link for a 30-day free trial to Audible: https://www.audibletrial.com/CommonDescent

The Intro and Outro music is “On the Origin of Species” by Protodome. More music like this at http://ocremix.org.

Episode 186 - Owls Mar 02, 2024

Owls are among the world’s most iconic and charismatic birds, and they’re also among the most effective aerial predators. This episode, we’ll take a tour of the amazing adaptations that have allowed owls to achieve their modern diversity and worldwide range, and we’ll explore what we know – and what we don’t – about their evolutionary history.

In the news: snake evolution, ancient polar life, dinosaur joints, and dragon teeth.

Time markers:
Intro & Announcements: 00:00:00
News: 00:05:10
Main discussion, Part 1: 00:40:35
Main discussion, Part 2: 01:23:50
Patron question: 02:03:15

Check out our website for this episode’s blog post and more: http://commondescentpodcast.com/

Join us on Patreon to support the podcast and enjoy bonus content: https://www.patreon.com/commondescentpodcast

Got a topic you want to hear about? Submit your episode request here: https://commondescentpodcast.com/request-a-topic/

We’re an Audible Affiliate Partner! Use this link for a 30-day free trial to Audible: https://www.audibletrial.com/CommonDescent

Lots more ways to connect with us: https://linktr.ee/common_descent

The Intro and Outro music is “On the Origin of Species” by Protodome. More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0 http://creativecommons.org/licenses/by/3.0/

Episode 185 - Cacti Feb 17, 2024

Cacti are famous for their spine-shaped leaves, their water-retaining tissues, their green stems, and especially for being among the most well-adapted organisms on Earth for dry environments. This episode, we’re joined by Dr. Aly Baumgartner to discuss the diversity of cacti, their unique adaptations for an unusual lifestyle, and their mysterious evolutionary past.

In the news: Stone Age jewelry, kelp fossils, long-jawed fish, and early trees.

Time markers:
Intro & Announcements: 00:00:00
News: 00:06:00
Main discussion, Part 1: 00:38:25
Main discussion, Part 2: 01:25:00
Patron question: 02:04:00

Check out our website for this episode’s blog post and more: http://commondescentpodcast.com/

Join us on Patreon to support the podcast and enjoy bonus content: https://www.patreon.com/commondescentpodcast

Got a topic you want to hear about? Submit your episode request here: https://commondescentpodcast.com/request-a-topic/

We’re an Audible Affiliate Partner! Use this link for a 30-day free trial to Audible: https://www.audibletrial.com/CommonDescent

Lots more ways to connect with us: https://linktr.ee/common_descent

The Intro and Outro music is “On the Origin of Species” by Protodome. More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0 http://creativecommons.org/licenses/by/3.0/

Episode 184 - Richard Owen Feb 03, 2024

A familiar name to modern biologists and paleontologists, Sir Richard Owen is famous for his pioneering work in the fields of paleontology and comparative anatomy, his contributions to public appreciation of biological sciences, and his often antagonistic relationships with contemporary scientists. This episode, we’ll explore Owen’s major scientific contributions and his long-standing reputation as a villain of 19th Century science.

In the news: temnospondyl survivors, big sauropods, dinosaur hunting, and mammoth journeys.

Time markers:
Intro & Announcements: 00:00:00
News: 00:04:50
Main discussion, Part 1: 00:32:10
Main discussion, Part 2: 01:04:30
Patron question: 01:36:35

Check out our website for this episode’s blog post and more: http://commondescentpodcast.com/

Join us on Patreon to support the podcast and enjoy bonus content: https://www.patreon.com/commondescentpodcast

Got a topic you want to hear about? Submit your episode request here: https://commondescentpodcast.com/request-a-topic/

We’re an Audible Affiliate Partner! Use this link for a 30-day free trial to Audible: https://www.audibletrial.com/CommonDescent

Lots more ways to connect with us: https://linktr.ee/common_descent

The Intro and Outro music is “On the Origin of Species” by Protodome. More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0 http://creativecommons.org/licenses/by/3.0/

Episode 183 - Feathers Jan 20, 2024

Feathers are among the most diverse and complex forms of animal integument. Today, they’re exclusive to birds, where they can be found in a dizzying variety of forms and functions, and incredible fossils reveal even more diversity of feathers on ancient dinosaurs. This episode, we explore the features of modern feathers, the mysteries of feather origins, and the much-discussed question of which ancient animals were truly feathered.

In the news: sturdy bird necks, giant worms, early photosynthesis, and very old skin.

Time markers:
Intro & Announcements: 00:00:00
News: 00:06:20
Main discussion, Part 1: 00:37:00
Main discussion, Part 2: 01:15:55
Patron question: 02:11:30

Check out our website for this episode’s blog post and more: http://commondescentpodcast.com/

Join us on Patreon to support the podcast and enjoy bonus content: https://www.patreon.com/commondescentpodcast

Got a topic you want to hear about? Submit your episode request here: https://commondescentpodcast.com/request-a-topic/

We’re an Audible Affiliate Partner! Use this link for a 30-day free trial to Audible: https://www.audibletrial.com/CommonDescent

Lots more ways to connect with us: https://linktr.ee/common_descent

The Intro and Outro music is “On the Origin of Species” by Protodome. More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0 http://creativecommons.org/licenses/by/3.0/

Episode 182 - Camouflage Jan 06, 2024

Blending in with the surroundings is an incredibly useful habit. Even without evidence, this fact would be obvious from the sheer variety of organisms that do it and the vast diversity of strategies and adaptations they use. This episode, we look at what camouflage is and how it works in its many forms, and we explore how we can spot camouflage – and what we can learn from it – in the fossil record.

In the news: curled-up trilobites, Antarctic octopus DNA, crab organs, and giant whales.

Time markers:
Intro & Announcements: 00:00:00
News: 00:05:35
Main discussion, Part 1: 00:37:25
Main discussion, Part 2: 01:29:35
Patron question: 02:14:40

Check out our website for this episode’s blog post and more:
http://commondescentpodcast.com/

Join us on Patreon to support the podcast and enjoy bonus content: https://www.patreon.com/commondescentpodcast

Got a topic you want to hear about? Submit your episode request here:
https://commondescentpodcast.com/request-a-topic/

We’re an Audible Affiliate Partner! Use this link for a 30-day free trial to Audible: https://www.audibletrial.com/CommonDescent

Lots more ways to connect with us: https://linktr.ee/common_descent

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

End of the Year Q&A 2023 Dec 31, 2023

Happy New Year!

It’s time again for our annual answering-your-questions marathon episode! Thanks to all our askers for a great set of questions!

And as always, a huge thanks to all of you who have supported the podcast this year, whether you’re a top-tier Patron or a newcomer who’s just a couple episodes in. You make Common Descent possible.

Now sit back and enjoy several hours of us rambling about whatever you asked about.

Check out our website for blog posts and more:
http://commondescentpodcast.com/

Join us on Patreon to support the podcast and enjoy bonus content: https://www.patreon.com/commondescentpodcast

Got a topic you want to hear about? Submit your episode request here:
https://commondescentpodcast.com/request-a-topic/

We’re an Audible Affiliate Partner! Use this link for a 30-day free trial to Audible: https://www.audibletrial.com/CommonDescent

Lots more ways to connect with us: https://linktr.ee/common_descent

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Episode 181 - Dragonflies Dec 23, 2023

Dragonflies and damselflies are incredible insects. They are arguably the world’s most skilled fliers, arguably the world’s most successful predators, and arguably the best insects (so says David). Not only that, they and their ancient cousins have been abundant and successful aerial predators for over 300 million years. This episode, we discuss what sets these bugs apart from all the rest, we explore what’s known of their evolution from their surprisingly good fossil record, and of course we highlight their most famous extinct cousins: the giant griffenflies.

In the news: croc habitats, tyrannosaur food, elephant trunks, and early mosquitos.

Time markers:
Intro & Announcements: 00:00:00
News: 00:04:30
Main discussion, Part 1: 00:34:15
Main discussion, Part 2: 01:13:15
Patron question: 01:53:45

Check out our website for this episode’s blog post and more:
http://commondescentpodcast.com/

Join us on Patreon to support the podcast and enjoy bonus content: https://www.patreon.com/commondescentpodcast

Got a topic you want to hear about? Submit your episode request here:
https://commondescentpodcast.com/request-a-topic/

We’re an Audible Affiliate Partner! Use this link for a 30-day free trial to Audible: https://www.audibletrial.com/CommonDescent

Lots more ways to connect with us: https://linktr.ee/common_descent

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 180 - Filter Feeding Dec 09, 2023

Filter feeding is among the most widespread dietary strategies in the world. From tiny bivalves to massive basking sharks, animals have developed a vast array of convergent strategies for filtering tiny food particles out of the water. This episode, we discuss what it takes to be a filter feeder, why it’s so common, the various methods animals employ to make it happen, and how we try (sometimes successfully) to identify filter feeding in the fossil record.

In the news: Thailand trilobites, mammal aging, bird-like footprints, and whale echolocation.

Time markers:
Intro & Announcements: 00:00:00
News: 00:04:55
Main discussion, Part 1: 00:38:30
Main discussion, Part 2: 01:22:00
Patron question: 02:04:30

Check out our website for this episode’s blog post and more:
http://commondescentpodcast.com/

The End of the Year Q&A submission form is open! Submit your question here:
https://forms.gle/EeAMhEfnatVWqmnS9

Join us on Patreon to support the podcast and enjoy bonus content: https://www.patreon.com/commondescentpodcast

Got a topic you want to hear about? Submit your episode request here:
https://commondescentpodcast.com/request-a-topic/

We’re an Audible Affiliate Partner! Use this link for a 30-day free trial to Audible: https://www.audibletrial.com/CommonDescent

Lots more ways to connect with us: https://linktr.ee/common_descent

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Patron Mini-Episode Compilation #4 Dec 03, 2023

Mini-episodes are rewards for our high-level supporters on Patreon, each one focusing on a requested topic for a specific Patron. From time to time, we combine a bunch of these and release them as a bundle for all our listeners to enjoy. Enjoy!

A huge thanks as always to our Patrons for their kind and generous contributions to our education efforts.

Intro: 00:00:00
Icarosaurus for Elizabeth - 00:02:25
Corvids for Stephen - 00:17:20
Thylacines for Traci - 00:40:45
Shrikes for Oscar - 01:02:10
Entelodonts for Lucy - 01:20:15
Iguanas for Tobias - 01:46:40

Check out our website for blog posts, additional content, and more: http://commondescentpodcast.com/

Join us on Patreon to support the podcast and enjoy bonus content: https://www.patreon.com/commondescentpodcast

Got a topic you want to hear about? Submit your episode request here: https://commondescentpodcast.com/request-a-topic/

We’re an Audible Affiliate Partner! Use this link for a 30-day free trial to Audible: https://www.audibletrial.com/CommonDescent

Lots more ways to connect with us: https://linktr.ee/common_descent

The Intro and Outro music is “On the Origin of Species” by Protodome. More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0 http://creativecommons.org/licenses/by/3.0/

Episode 179 - Thermoregulation Nov 25, 2023

If things get too hot or too cold, the crucial processes inside the cells and tissues of living organisms stop working properly, and that’s bad. So, organisms expend a lot of time and energy managing their body temperatures. This episode, we break down the familiar concepts of “warm-blooded” and “cold-blooded,” we discuss the many adaptations that animals use to manage the heat, we explore what evidence allows us to interpret thermoregulatory strategies in the fossil record, and we investigate what is known about how these strategies have evolved over time.

In the news: soft robot echinoderms, bird tracks, taste evolution, and dinosaur eggs.

Time markers:
Intro & Announcements: 00:00:00
News: 00:04:45
Main discussion, Part 1: 00:36:00
Main discussion, Part 2: 01:20:30
Patron question: 1:59:00

Check out our website for this episode’s blog post and more:
http://commondescentpodcast.com/

The End of the Year Q&A submission form is open! Submit your question here:
https://forms.gle/EeAMhEfnatVWqmnS9

Join us on Patreon to support the podcast and enjoy bonus content: https://www.patreon.com/commondescentpodcast

Got a topic you want to hear about? Submit your episode request here:
https://commondescentpodcast.com/request-a-topic/

We’re an Audible Affiliate Partner! Use this link for a 30-day free trial to Audible: https://www.audibletrial.com/CommonDescent

Lots more ways to connect with us: https://linktr.ee/common_descent

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 178 - Ears Nov 11, 2023

Listen up! The world around us is full of sound, and animals have evolved numerous strategies for receiving and interpreting those sounds. In this episode, we discuss the many varieties of sound-sensing organs and how they’ve evolved repeatedly throughout life history. We’ll also explore some of the other important things that ears can do, including the ever-important task of maintaining our equilibrium.

In the news: carnivorous lampreys, caterpillar legs, early dragonflies, and the sea star body plan.

Time markers:
Intro & Announcements: 00:00:00
News: 00:06:10
Main discussion, Part 1: 00:36:45
Main discussion, Part 2: 01:30:15
Patron question: 2:14:05

Check out our website for this episode’s blog post and more:
http://commondescentpodcast.com/

The End of the Year Q&A submission form is open! Submit your question here:
https://forms.gle/EeAMhEfnatVWqmnS9

Join us on Patreon to support the podcast and enjoy bonus content: https://www.patreon.com/commondescentpodcast

Got a topic you want to hear about? Submit your episode request here:
https://commondescentpodcast.com/request-a-topic/

We’re an Audible Affiliate Partner! Use this link for a 30-day free trial to Audible: https://www.audibletrial.com/CommonDescent

Lots more ways to connect with us: https://linktr.ee/common_descent

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Cute-E - Friendly Dragons Nov 04, 2023

Welcome … to Cute-E!

Every October during Spook-E, we have fun speculatively evolving monsters from myths and stories, but we leave out the cuddlier side of fiction. In Cute-E, we’re choosing kinder creatures and discussing how they – or something like them - might evolve under the rules of evolution and natural selection, pulling inspiration from organisms of the real world. This year’s theme: Dragons.

This episode, we snuggle up with the sweeter side of dragons. How might natural processes produce intelligent, social, and even amicable draconic beasts? Our creatures to create this time: Friendly Dragons.

Join the Common Descent Discord server for more Spook-E discussion! https://discord.gg/CwPBxdh9Ev

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast

We’re an Audible Affiliate Partner! Use this link for a 30-day free trial to Audible: https://www.audibletrial.com/CommonDescent

More ways to connect with us: https://linktr.ee/common_descent

You can email us at commondescentpodcast@gmail.com
Or send us physical mail at:
The Common Descent Podcast
1735 W State of Franklin Rd. Ste 5 #165
Johnson City, TN 37604

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Episode 177 - Neanderthals Oct 28, 2023

These days, we Homo sapiens are the only humans around, but that wasn’t always the case. This episode, we are joined by special guest Dr. Bridget Alex to discuss our most famous extinct cousins, Neanderthals. We explore what makes them similar and dissimilar to us, what evidence we use to study their lives and culture, and how our understanding of them has grown from outdated misrepresentations to the complex and fascinating people we now know them to have been.

In the news: a fossil bat skull, beaver evolution, early pliosaurs, and Ancient Egyptian snakes

Time markers:
Intro & Announcements: 00:00:00
News: 00:06:25
Main discussion, Part 1: 00:41:00
Main discussion, Part 2: 01:38:35
Patron question: 02:30:35

Find Dr. Alex on her website: bridgetalex.com
Or follow her on Twitter: @bannelia

Check out our website for this episode’s blog post and more:
http://commondescentpodcast.com/

Join us on Patreon to support the podcast and enjoy bonus content: https://www.patreon.com/commondescentpodcast

Got a topic you want to hear about? Submit your episode request here:
https://commondescentpodcast.com/request-a-topic/

We’re an Audible Affiliate Partner! Use this link for a 30-day free trial to Audible: https://www.audibletrial.com/CommonDescent

Lots more ways to connect with us: https://linktr.ee/common_descent

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Spook-E - Turtle Dragons Oct 28, 2023

Welcome ... to Spookulative Evolution.

It’s October, and that means it’s Spook-E Season once again! Each episode in the series, we pick a type of monster and explore how it – or something like it – might evolve under the rules of evolution and natural selection, pulling inspiration from life in the real world. This year’s theme: Dragons.

This episode, we combine some disparate mythologies. How could nature give rise to a shelled wonder with a mixed reputation? Our creatures to create this time: Turtle Dragons.

Join the Common Descent Discord server for more Spook-E discussion! https://discord.gg/CwPBxdh9Ev

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast

We’re an Audible Affiliate Partner! Use this link for a 30-day free trial to Audible: https://www.audibletrial.com/CommonDescent

More ways to connect with us: https://linktr.ee/common_descent

You can email us at commondescentpodcast@gmail.com
Or send us physical mail at:
The Common Descent Podcast
1735 W State of Franklin Rd. Ste 5 #165
Johnson City, TN 37604

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Spook-E - Wyverns Oct 21, 2023

Welcome ... to Spookulative Evolution.

It’s October, and that means it’s Spook-E Season once again! Each episode in the series, we pick a type of monster and explore how it – or something like it – might evolve under the rules of evolution and natural selection, pulling inspiration from life in the real world. This year’s theme: Dragons.

This episode, we investigate a modern favorite. How could natural selection give us a (perhaps) more reasonably shaped dragon? Our creatures to create this time: Wyverns.

Join the Common Descent Discord server for more Spook-E discussion! https://discord.gg/CwPBxdh9Ev

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast

We’re an Audible Affiliate Partner! Use this link for a 30-day free trial to Audible: https://www.audibletrial.com/CommonDescent

More ways to connect with us: https://linktr.ee/common_descent

You can email us at commondescentpodcast@gmail.com
Or send us physical mail at:
The Common Descent Podcast
1735 W State of Franklin Rd. Ste 5 #165
Johnson City, TN 37604

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Episode 176 - Hadrosaurs Oct 14, 2023

Hadrosaurs (the so-called “duckbill” dinosaurs) and their fellow ornithopods were among the most abundant and successful dinosaur groups of all time. This episode, we discuss their evolution and diversity, and we explore some of the most outstanding and unique features of the group, including their incredible fossil record, complex social behaviors, wacky head ornaments, and their truly incredible mouths.

In the news: fluorescent mammals, snake tracks, leaf mining, and terror bird footprints.

Time markers:
Intro & Announcements: 00:00:00
News: 00:06:40
Main discussion, Part 1: 00:41:30
Main discussion, Part 2: 01:14:25
Patron question: 02:18:15

Check out our website for this episode’s blog post and more:
http://commondescentpodcast.com/

Join us on Patreon to support the podcast and enjoy bonus content: https://www.patreon.com/commondescentpodcast

Got a topic you want to hear about? Submit your episode request here:
https://commondescentpodcast.com/request-a-topic/

We’re an Audible Affiliate Partner! Use this link for a 30-day free trial to Audible: https://www.audibletrial.com/CommonDescent

Lots more ways to connect with us: https://linktr.ee/common_descent

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Spook-E - East Asian Dragons Oct 14, 2023

Welcome ... to Spookulative Evolution.

It’s October, and that means it’s Spook-E Season once again! Each episode in the series, we pick a type of monster and explore how it – or something like it – might evolve under the rules of evolution and natural selection, pulling inspiration from life in the real world. This year’s theme: Dragons.

This episode, we travel to another part of the world. How could we end up with an elemental being that combines the features of many animals? Our creatures to create this time: East Asian Dragons.

Join the Common Descent Discord server for more Spook-E discussion! https://discord.gg/CwPBxdh9Ev

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast

We’re an Audible Affiliate Partner! Use this link for a 30-day free trial to Audible: https://www.audibletrial.com/CommonDescent

More ways to connect with us: https://linktr.ee/common_descent

You can email us at commondescentpodcast@gmail.com
Or send us physical mail at:
The Common Descent Podcast
1735 W State of Franklin Rd. Ste 5 #165
Johnson City, TN 37604

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Spook-E - European Dragons Oct 07, 2023

Welcome ... to Spookulative Evolution.

It’s October, and that means it’s Spook-E Season once again! Each episode in the series, we pick a type of monster and explore how it – or something like it – might evolve under the rules of evolution and natural selection, pulling inspiration from life in the real world. This year’s theme: Dragons.

This episode, we start with something familiar. How might evolution produce a fearsome serpentine beast with four legs and two wings? Our creatures to create this time: European Dragons.

Join the Common Descent Discord server for more Spook-E discussion! https://discord.gg/CwPBxdh9Ev

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast

We’re an Audible Affiliate Partner! Use this link for a 30-day free trial to Audible: https://www.audibletrial.com/CommonDescent

More ways to connect with us: https://linktr.ee/common_descent

You can email us at commondescentpodcast@gmail.com
Or send us physical mail at:
The Common Descent Podcast
1735 W State of Franklin Rd. Ste 5 #165
Johnson City, TN 37604

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Episode 175 - Plant Defenses Sep 30, 2023

Plants are delicious, nutritious, and full of energy, so they’re prime targets for all sorts of herbivores, parasites, and pathogens. But plants aren’t just sitting passively accepting attacks, they use a variety of strategies to defend themselves, from the frustrating to the fatal. This episode, we’re joined by our favorite paleobotanist, Aly Baumgartner, to discuss the many ways plants defend themselves – physically, chemically, and beyond – and the fascinating evolutionary history of plant defenses and their offenders.

In the news: deep-sea fish, Wollemi pines, learning birds, and plant technology.

Time markers:
Intro & Announcements: 00:00:00
News: 00:06:55
Main discussion, Part 1: 00:38:15
Main discussion, Part 2: 01:12:25
Patron question: 01:48:10

Check out our blog for bonus info and pictures:
http://commondescentpodcast.com/

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast

Got a topic you want to hear about? Submit your episode request here:
https://commondescentpodcast.com/request-a-topic/

We’re an Audible Affiliate Partner! Use this link for a 30-day free trial to Audible: https://www.audibletrial.com/CommonDescent

Or make a one-time donation via PayPal: https://tinyurl.com/4c68u4hp

Find merch at the Common Descent Store! http://zazzle.com/common_descent

Join the Common Descent Discord server! https://discord.gg/CwPBxdh9Ev

Follow and Support us on:
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast
Instagram: https://www.instagram.com/commondescentpodcast/
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw
PodBean: https://commondescentpodcast.podbean.com/

You can email us at commondescentpodcast(at)gmail.com
Or send us physical mail at:
The Common Descent Podcast
1735 W State of Franklin Rd. Ste 5 #165
Johnson City, TN 37604

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 174 - The Mesozoic Marine Revolution Sep 16, 2023

Earth’s oceans change over time, not just in their size and shape, but also in the very dynamics of their ecosystems. The stage was set for modern ocean ecosystems by an event called the Mesozoic Marine Revolution, a dramatic restructuring of ecology in shallow seas that saw the rise of many forms of active predatory lifestyles. This episode, we discuss the fossil evidence, the major players, and the ongoing and sometimes contentious research into this crucial period.

In the news: early arthropods, early apes, prehistoric ravens, and long-necked marine reptiles.

Time markers:
Intro & Announcements: 00:00:00
News: 00:07:00
Main discussion, Part 1: 00:35:00
Main discussion, Part 2: 01:18:35
Patron question: 01:51:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.com/

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast

Got a topic you want to hear about? Submit your episode request here:
https://commondescentpodcast.com/request-a-topic/

We’re an Audible Affiliate Partner! Use this link for a 30-day free trial to Audible: https://www.audibletrial.com/CommonDescent

Or make a one-time donation via PayPal: https://tinyurl.com/4c68u4hp

Find merch at the Common Descent Store! http://zazzle.com/common_descent

Join the Common Descent Discord server! https://discord.gg/CwPBxdh9Ev

Follow and Support us on:
Twitter: https://twitter.com/CommonDescentPC
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PodBean: https://commondescentpodcast.podbean.com/

You can email us at commondescentpodcast(at)gmail.com
Or send us physical mail at:
The Common Descent Podcast
1735 W State of Franklin Rd. Ste 5 #165
Johnson City, TN 37604

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 173 - Herbivores (Plant-Eaters) Sep 02, 2023

Eating plants isn’t easy, and yet the habit has evolved many times over the history of life on Earth, and herbivores have become essential components of ecosystems as we know them. This episode, we discuss the adaptations animals use to get around the challenges of plant-eating, as well as the incredible history of the repeated origins of herbivory.

In the news: vampire squids, death by ammonite, early archosaurs, and dinosaur tracks.

Time markers:
Intro & Announcements: 00:00:00
News: 00:06:35
Main discussion, Part 1: 00:37:10
Main discussion, Part 2: 01:18:35
Patron question: 02:04:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.com/

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast

Got a topic you want to hear about? Submit your episode request here:
https://commondescentpodcast.com/request-a-topic/

We’re an Audible Affiliate Partner! Use this link for a 30-day free trial to Audible: https://www.audibletrial.com/CommonDescent

Or make a one-time donation via PayPal: https://tinyurl.com/4c68u4hp

Find merch at the Common Descent Store! http://zazzle.com/common_descent

Join the Common Descent Discord server! https://discord.gg/CwPBxdh9Ev

Follow and Support us on:
Twitter: https://twitter.com/CommonDescentPC
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PodBean: https://commondescentpodcast.podbean.com/

You can email us at commondescentpodcast(at)gmail.com
Or send us physical mail at:
The Common Descent Podcast
1735 W State of Franklin Rd. Ste 5 #165
Johnson City, TN 37604

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Silver Screen Science - 65 (2023) Aug 27, 2023

There’s a new paleontology-adjacent movie out there, and as usual, it’s a great opportunity to examine how science is translated to the big screen.

Back to the Cretaceous (kind of) – 65 (2023)

Check out our website for more stuff:
http://commondescentpodcast.com/

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast

Got a topic you want to hear about? Submit your episode request here:
https://commondescentpodcast.com/request-a-topic/

We’re an Audible Affiliate Partner! Use this link for a 30-day free trial to Audible: https://www.audibletrial.com/CommonDescent

Or make a one-time donation via PayPal: https://tinyurl.com/4c68u4hp

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You can email us at commondescentpodcast(at)gmail.com
Or send us physical mail at:
The Common Descent Podcast
1735 W State of Franklin Rd. Ste 5 #165
Johnson City, TN 37604

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Episode 172 - Toothed Whales Aug 19, 2023

For much of their evolutionary history, whales have been divided into two main lineages: baleen whales and toothed whales. The toothed variety are especially diverse today, including sperm whales, belugas, porpoises, and so, so many dolphins (among others). This episode, we explore what makes toothed whales distinct – besides the obvious – and what the whale fossil record tells us about how they came to be among the most successful marine animals in Earth history.

In the news: leaf-eating birds, tiny whales, whale-like reptiles, and giant whales.

Time markers:
Intro & Announcements: 00:00:00
News: 00:07:25
Main discussion, Part 1: 00:42:45
Main discussion, Part 2: 01:24:15
Patron question: 02:23:45

Check out our blog for bonus info and pictures:
http://commondescentpodcast.com/

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast

Got a topic you want to hear about? Submit your episode request here:
https://commondescentpodcast.com/request-a-topic/

We’re an Audible Affiliate Partner! Use this link for a 30-day free trial to Audible: https://www.audibletrial.com/CommonDescent

Or make a one-time donation via PayPal: https://tinyurl.com/4c68u4hp

Find merch at the Common Descent Store! http://zazzle.com/common_descent

Join the Common Descent Discord server! https://discord.gg/CwPBxdh9Ev

Follow and Support us on:
Twitter: https://twitter.com/CommonDescentPC
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You can email us at commondescentpodcast(at)gmail.com
Or send us physical mail at:
The Common Descent Podcast
1735 W State of Franklin Rd. Ste 5 #165
Johnson City, TN 37604

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 171 - The Tethys Sea Aug 05, 2023

Throughout Earth history, tectonic forces have changed the shape of the continents – and the oceans! You might be familiar with the Tethys Sea as an ancient ocean nestled against Pangaea, home to marine reptiles and more, but there’s actually a whole series of ancient bodies of water that bear this name. In this episode, we explore the various iterations of the Tethys, discuss how geologists study them, and examine how these ancient oceans shaped the world as we know it today.

In the news: crocodile conservation, fighting fossils, whale evolution, and bird tracks.

Time markers:
Intro & Announcements: 00:00:00
News: 00:05:40
Main discussion, Part 1: 00:43:15
Main discussion, Part 2: 01:06:15
Patron question: 01:30:45

Check out our blog for bonus info and pictures:
http://commondescentpodcast.com/

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast

Got a topic you want to hear about? Submit your episode request here:
https://commondescentpodcast.com/request-a-topic/

We’re an Audible Affiliate Partner! Use this link for a 30-day free trial to Audible: https://www.audibletrial.com/CommonDescent

Or make a one-time donation via PayPal: https://tinyurl.com/4c68u4hp

Find merch at the Common Descent Store! http://zazzle.com/common_descent

Join the Common Descent Discord server! https://discord.gg/CwPBxdh9Ev

Follow and Support us on:
Twitter: https://twitter.com/CommonDescentPC
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PodBean: https://commondescentpodcast.podbean.com/

You can email us at commondescentpodcast(at)gmail.com
Or send us physical mail at:
The Common Descent Podcast
1735 W State of Franklin Rd. Ste 5 #165
Johnson City, TN 37604

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 170 - Milk Jul 22, 2023

Mammals are famous for their ability to produce milk, a special substance that is essential for providing newborns with the ingredients they need for healthy development. As it turns out, mammals aren’t the only ones. Milk-like substances have evolved in many groups of animals which nourish their developing young. In this episode, we discuss what milk is, what it does, how it seems to have evolved, and the surprisingly long list of times animals have evolved the habit of providing nutritious fluids to feed their offspring.

In the news: Anomalocaris diets, Asian alligators, ancient puberty, and the Cambrian Explosion.

Time markers:
Intro & Announcements: 00:00:00
News: 00:05:55
Main discussion, Part 1: 00:41:30
Main discussion, Part 2: 01:29:35
Patron question: 02:04:10

Check out our blog for bonus info and pictures:
http://commondescentpodcast.com/

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast

Listen to David talk about snake paleontology on Snake Talk!
https://www.oriannesociety.org/snake-talk/

Listen to Will and David discuss the evolution of flight on Little Curiosities!
https://listen.qcodemedia.com/littlecuriosities

We’re an Audible Affiliate Partner! Use this link for a 30-day free trial to Audible: https://www.audibletrial.com/CommonDescent

Or make a one-time donation via PayPal: https://tinyurl.com/4c68u4hp

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Join the Common Descent Discord server! https://discord.gg/CwPBxdh9Ev

Follow and Support us on:
Twitter: https://twitter.com/CommonDescentPC
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PodBean: https://commondescentpodcast.podbean.com/

You can email us at commondescentpodcast(at)gmail.com
Or send us physical mail at:
The Common Descent Podcast
1735 W State of Franklin Rd. Ste 5 #165
Johnson City, TN 37604

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Snake Stuff with David Jul 16, 2023

Happy Snake Month!

In this special episode, it’s all about snakes with our very own snake-enthusiast: David!

Thanks to our Patrons for providing the inspiration for these interview questions!

Join us on Patreon to support the podcast our scaly friends!
https://www.patreon.com/commondescentpodcast

Check out our blog for bonus info and pictures:
http://commondescentpodcast.com/

We’re an Audible Affiliate Partner! Use this link for a 30-day free trial to Audible:
https://www.audibletrial.com/CommonDescent

Or make a one-time donation via PayPal:
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Find merch at the Common Descent Store!
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Join the Common Descent Discord server!
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Follow and Support us on:
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PodBean: https://commondescentpodcast.podbean.com/

You can email us at commondescentpodcast(at)gmail.com
Or send us physical mail at:
The Common Descent Podcast
1735 W State of Franklin Rd. Ste 5 #165
Johnson City, TN 37604

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Episode 169 - Sea Snakes Jul 08, 2023

Snakes are surprisingly good at adapting to life in saltwater. Today’s seafaring serpents include a wide diversity of semi-marine species as well as a fascinating assortment of fully oceanic snakes, and this is a tradition that extends well into the past, with numerous radiations of ancient sea snakes. This episode, we explore the repeated evolution of marine lifestyles in snakes, and the array of adaptations that have allowed them to take to the sea. Happy Snake Month!

In the news: dinosaur hands, snake genetics, decapitated reptiles, and cartwheeling snakes.

Time markers:
Intro & Announcements: 00:00:00
News: 00:06:10
Main discussion, Part 1: 00:35:15
Main discussion, Part 2: 01:19:35
Patron question: 01:54:30

Check out our blog for bonus info and pictures:
http://commondescentpodcast.com/

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast

Listen to David talk about snake paleontology on Snake Talk!
https://www.oriannesociety.org/snake-talk/

Listen to Will and David discuss the evolution of flight on Little Curiosities!
https://listen.qcodemedia.com/littlecuriosities

Learn more about Disability Pride Month!
https://thearc.org/blog/why-and-how-to-celebrate-disability-pride-month-2023/

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You can email us at commondescentpodcast(at)gmail.com
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The Common Descent Podcast
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The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 168 – Marine Crocs Jun 24, 2023

Most crocodilians today can handle saltwater to some degree, but many of their ancient cousins were much more suited to a life at sea, including some of the most impressive ocean-going reptiles in history. In this episode, we’ll explore the many lineages of marine crocs that have evolved over the last 150 million years, and we’ll dive into the special adaptations that allowed them to take to the seas over and over again. Happy Croc Month!

In the news: a dinosaur transition, tusked dolphins, bird flutes, and crocodile parthenogenesis

Time markers:
Intro & Announcements: 00:00:00
News: 00:06:18
Main discussion, Part 1: 00:41:55
Main discussion, Part 2: 01:13:55
Patron question: 01:53:50

Check out our blog for bonus info and pictures:
http://commondescentpodcast.com/

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast

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You can email us at commondescentpodcast(at)gmail.com
Or send us physical mail at:
The Common Descent Podcast
1735 W State of Franklin Rd. Ste 5 #165
Johnson City, TN 37604

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Croc Chat with Will Jun 17, 2023

Happy Croc Month!

In this special episode, we talk about crocs with the croc-fanatic himself: our very own Will!

Thanks to our Patrons for providing the inspiration for these interview questions!

Join us on Patreon to support the podcast our scaly friends!
https://www.patreon.com/commondescentpodcast

Check out our blog for bonus info and pictures:
http://commondescentpodcast.com/

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You can email us at commondescentpodcast(at)gmail.com
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The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Episode 167 – Geologic Dating Jun 10, 2023

When scientists find a new rock formation or fossil assemblage, how do they determine how old it is? The answer lies in the many varied methods of geologic dating. In this episode, we’ll discuss how we can sort the events in Earth history, how we calculate specific ages for ancient materials – including a deep-dive into radiometric dating! – and most importantly, how these many techniques support and complement each other.

In the news: gaze following, polar pterosaurs, pachycephalosaur heads, and giant marsupials.

Time markers:
Intro & Announcements: 00:00:00
News: 00:06:50
Main discussion, Part 1: 00:38:45
Main discussion, Part 2: 01:31:10
Patron question: 02:20:18

Check out our blog for bonus info and pictures:
http://commondescentpodcast.com/

Trans Lifeline connects trans people to community support and resources:
https://translifeline.org/

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast

We’re an Audible Affiliate Partner! Use this link for a 30-day free trial to Audible: https://www.audibletrial.com/CommonDescent

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You can email us at commondescentpodcast(at)gmail.com
Or send us physical mail at:
The Common Descent Podcast
1735 W State of Franklin Rd. Ste 5 #165
Johnson City, TN 37604

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 166 - Monotremes May 27, 2023

In our modern world, there are three major groups of mammals: placentals (that’s most of us), marsupials, and the rare and bizarre monotremes. Today’s monotremes – that’s echidnas and platypuses – are famous for their seemingly “un-mammalian” features: they lack external ears, they deliver milk without nipples, and they even lay eggs! This episode, we discuss what makes monotremes unique, the many questions still unanswered about their ancient history, and whether or not they are truly good representatives of early mammal evolution.

In the news: weird mosasaur teeth, Tibetan sabertooths, marsupial growth, and giant pliosaurs.

Time markers:
Intro & Announcements: 00:00:00
News: 00:07:50
Main discussion, Part 1: 00:38:00
Main discussion, Part 2: 01:11:40
Patron question: 02:01:10

Check out our blog for bonus info and pictures:
http://commondescentpodcast.com/

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast

We’re an Audible Affiliate Partner! Use this link for a 30-day free trial to Audible: www.audibletrial.com/CommonDescent

Or make a one-time donation via PayPal: https://tinyurl.com/4c68u4hp

Find merch at the Common Descent Store! http://zazzle.com/common_descent

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The Common Descent Podcast
1735 W State of Franklin Rd. Ste 5 #165
Johnson City, TN 37604

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 165 - Fruit May 13, 2023

One of the hallmarks of angiosperms (flowering plants) is the formation of a container to hold their seeds. These containers are fruits, and they come in an astonishing variety of forms and functions, far beyond the typical line up of fruits, nuts, and berries we see at the grocery store. Join us and our favorite paleobotanist Dr. Aly Baumgartner as we explore what fruits are, what fruits do, and how fruits came to be so ubiquitous and important in modern ecosystems.

In the news: big predatory amphibians, exceptional fossil preservation, origins of blinking, and cycad cones.

Time markers:
Intro & Announcements: 00:00:00
News: 00:05:45
Main discussion, Part 1: 00:40:30
Main discussion, Part 2: 01:36:30
Patron question: 02:14:15

Check out our blog for bonus info and pictures:
http://commondescentpodcast.com/

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast

Follow this link for a 30-day free trial to Audible!
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You can email us at commondescentpodcast(at)gmail.com
Or send us physical mail at:
The Common Descent Podcast
1735 W State of Franklin Rd. Ste 5 #165
Johnson City, TN 37604

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 164 - The ”Boring Billion” Apr 29, 2023

From roughly 1.8 – 0.8 billion years ago, things on Earth seemingly slowed down. The geologic record shows a conspicuous lack of evidence for major climatic, tectonic, or biological changes, a dramatic contrast to the tumultuous times before and after. In this episode, we explore this so-called “Boring Billion” and discuss what made it so unusual. Along the way, we’ll examine claims that there might have been more going on than we think, that this time might have been a critical step toward the modern state of our planet, and that this billion might not have been so boring after all.

In the news: oldest bats, sauropod skulls, placoderm mouths, and feather-eating beetles.

Time markers:
Intro & Announcements: 00:00:00
News: 00:05:45
Main discussion, Part 1: 00:39:00
Main discussion, Part 2: 01:08:15
Patron question: 01:40:30

Listen to us on I Know Dino!
https://iknowdino.com/sinotyrannus-episode-437/

Will was a guest on Sprites of Life!
https://open.spotify.com/episode/7KmiNQcKWgpT6Nn0FRrMMp

Check out our blog for bonus info and pictures:
http://commondescentpodcast.com/

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast

Follow this link for a 30-day free trial to Audible!
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You can email us at commondescentpodcast(at)gmail.com
Or send us physical mail at:
The Common Descent Podcast
1735 W State of Franklin Rd. Ste 5 #165
Johnson City, TN 37604

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Patron Mini-Episode Compilation #3 Apr 25, 2023

As you might know by now, our high-level supporters on Patreon get to request a topic for their own special mini-episode! Every now and then, we collect the most recent of these and put them together into a compilation for everyone to hear. This is our third one!

A huge thanks as always to our Patrons for their kind contributions to our education efforts.

00:00:00 Intro
00:02:15 Stegosaurs for Sean
00:16:30 Tarantulas for Rebecca
00:35:00 Dilophosaurus for Hobart
00:52:15 Turtles for Quags
01:13:00 Whales for Thea
01:37:45 Parasaurolophus for Krzysztof

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast

Find us at commondescentpodcast.com

Follow this link for a 30-day free trial to Audible!
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PodBean: https://commondescentpodcast.podbean.com/

You can email us at commondescentpodcast(at)gmail.com
Or send us physical mail at:
The Common Descent Podcast
1735 W State of Franklin Rd. Ste 5 #165
Johnson City, TN 37604

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 163 - Claws Apr 15, 2023

Check the fingers and toes of your favorite vertebrate animals and you’re likely to find claws or something similar at the ends. These digit-caps come in a variety of shapes – claws, nails, even hooves – for a variety of functions. In this episode, we discuss the close relationship between claw form and function, how we study claws in the fossil record, and the intriguing questions of how claws came to be as we know them today.

In the news: swimming temnospondyls, ants and plants, Troodon eggs, and cooked snails.

Time markers:
Intro & Announcements: 00:00:00
News: 00:05:30
Main discussion, Part 1: 00:38:15
Main discussion, Part 2: 01:17:45
Patron question: 01:45:45

Listen to us on I Know Dino!
https://iknowdino.com/sinotyrannus-episode-437/

Will was a guest on Sprites of Life!
https://open.spotify.com/episode/7KmiNQcKWgpT6Nn0FRrMMp

Check out our blog for bonus info and pictures:
http://commondescentpodcast.com/

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast

Follow this link for a 30-day free trial to Audible!
www.audibletrial.com/CommonDescent

Or make a one-time donation via PayPal: https://tinyurl.com/4c68u4hp

Find merch at the Common Descent Store! http://zazzle.com/common_descent

Join the Common Descent Discord server! https://discord.gg/CwPBxdh9Ev

Follow and Support us on:
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You can email us at commondescentpodcast(at)gmail.com
Or send us physical mail at:
The Common Descent Podcast
1735 W State of Franklin Rd. Ste 5 #165
Johnson City, TN 37604

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 162 – Caecilians Apr 01, 2023

You’re probably familiar with frogs and salamanders, but there is a third group of modern amphibians, the strangest of them all: the worm-like caecilians. In this episode, we’ll explore the many bizarre anatomical features of caecilians, from their tentacled faces to their abrupt hind ends. Then we’ll explore the entire caecilian fossil record (it won’t take long) and tackle the much-discussed mystery of how this fascinating lineage of amphibians got started.

In the news: weird marsupial eyes, long dinosaur necks, and kangaroo rats. Also a retraction!

Time markers:
Intro & Announcements: 00:00:00
News: 00:05:00
Main discussion, Part 1: 00:43:30
Main discussion, Part 2: 01:22:30
Patron question: 01:59:30

HUGE THANKS to our News guests, Sabrina and Garret!
Check out I Know Dino: https://iknowdino.com/
And they have a Patreon! https://www.patreon.com/iknowdino

Check out our blog for bonus info and pictures:
http://commondescentpodcast.com/

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast

Follow this link for a 30-day free trial to Audible!
www.audibletrial.com/CommonDescent

Or make a one-time donation via PayPal: https://tinyurl.com/4c68u4hp

Find merch at the Common Descent Store! http://zazzle.com/common_descent

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Follow and Support us on:
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You can email us at commondescentpodcast(at)gmail.com
Or send us physical mail at:
The Common Descent Podcast
1735 W State of Franklin Rd. Ste 5 #165
Johnson City, TN 37604

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 161 - Sleep Mar 18, 2023

We spend a huge portion of our lives sleeping. For us and other animals, it’s clearly a very important behavior. And yet, despite how familiar and commonplace it is, there’s plenty we still don’t understand about sleep: its origins, evolution, and even how to define it in the first place. In this episode, we explore some of the remarkable variation in animal sleeping habits, we discuss some of the ways we study and understand sleep, and we touch upon the crucial – and much debated – question of what sleep even does for us anyway.

In the news: early monotremes, chunky dunk, Permian pollinators, and parasitic ant mutations.

Time markers:
Intro & Announcements: 00:00:00
News: 00:05:00
Main discussion, Part 1: 00:40:00
Main discussion, Part 2: 01:20:30
Patron question: 02:16:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.com/

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast

Follow this link for a 30-day free trial to Audible!
www.audibletrial.com/CommonDescent

Or make a one-time donation via PayPal: https://tinyurl.com/4c68u4hp

Find merch at the Common Descent Store! http://zazzle.com/common_descent

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You can email us at commondescentpodcast(at)gmail.com
Or send us physical mail at:
The Common Descent Podcast
1735 W State of Franklin Rd. Ste 5 #165
Johnson City, TN 37604

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 160 - The Messel Pit Mar 04, 2023

Once, it was a volcanic crater. Then, it was a lake, perhaps equal parts lush and deadly. Much later, it was a mining site. And finally, today, it is a UNESCO World Heritage Site and one of the most famous and heavily studied fossil sites in the world. In this episode, we discuss the history and formation of the Messel Pit, and we ooh and aah over a small sampling of the many thousands of incredible fossils that have been found there.

In the news: lacewing larvae, folding leaves, dinosaur growth, and ankylosaur sounds.

Time markers:
Intro & Announcements: 00:00:00
News: 00:06:00
Main discussion, Part 1: 00:36:00
Main discussion, Part 2: 01:00:00
Patron question: 01:40:30

Check out our blog for bonus info and pictures:
http://commondescentpodcast.com/

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast

Follow this link for a 30-day free trial to Audible!
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Find merch at the Common Descent Store! http://zazzle.com/common_descent

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You can email us at commondescentpodcast(at)gmail.com
Or send us physical mail at:
The Common Descent Podcast
1735 W State of Franklin Rd. Ste 5 #165
Johnson City, TN 37604

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 159 - Giraffes Feb 18, 2023

Giraffes are so famous and familiar to most of us that it can be easy to forget how utterly strange they are. This episode, we explore modern giraffes, their living cousins (okapis!), and their ancient relatives to understand how these monumental mammals came to be how they are. Along the way, we’ll meet a whole variety of wacky-horned fossil species, and we’ll tackle the questions of how and why the giraffe got its long neck.

In the news: dinosaur feet, marine crocs, hunted giant elephants, and bird egg evolution.

Time markers:
Intro & Announcements: 00:00:00
News: 00:03:30
Main discussion, Part 1: 00:40:00
Main discussion, Part 2: 01:26:30
Patron question: 02:00:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.com/

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast

Follow this link for a 30-day free trial to Audible!
www.audibletrial.com/CommonDescent

Or make a one-time donation via PayPal: https://tinyurl.com/4c68u4hp

Find merch at the Common Descent Store! http://zazzle.com/common_descent

Join the Common Descent Discord server! https://discord.gg/CwPBxdh9Ev

Follow and Support us on:
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PodBean: https://commondescentpodcast.podbean.com/
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You can email us at commondescentpodcast(at)gmail.com
Or send us physical mail at:
The Common Descent Podcast
1735 W State of Franklin Rd. Ste 5 #165
Johnson City, TN 37604

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 158 – Charles R. Knight Feb 04, 2023

Happy Darwin Day!

You’ve seen his artwork. And if you somehow haven’t, you’ve seen lots of art inspired by his artwork. Charles R. Knight might be the most influential paleoartist of all time, inspiring a century’s worth of artists, scientists, and ancient-animal-enthusiasts around the world with his skillful and scientifically-informed works. In this episode, we explore who Knight was, how he became a renowned paleoartist, and his extraordinary role in ushering in the modern world of paleontology.

In the news: Arctic primate-cousins, oldest caecilians, diving bird evolution, and Jehol bird preservation.

Time markers:
Intro & Announcements: 00:00:00
News: 00:05:00
Main discussion, Part 1: 00:39:00
Main discussion, Part 2: 01:05:00
Patron question: 01:46:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.com/

Check out Discovering Us from the Leakey Foundation:
https://leakeyfoundation.org/discovering-us/

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast

Follow this link for a 30-day free trial to Audible!
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You can email us at commondescentpodcast(at)gmail.com
Or send us physical mail at:
The Common Descent Podcast
1735 W State of Franklin Rd. Ste 5 #165
Johnson City, TN 37604

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 157 - Bioluminescence and Biofluorescence Jan 21, 2023

Glowing organisms might seem like something out of science fiction, but not only do they exist here on Earth, they are incredibly common. Some species glow when exposed to certain kinds of light, and others produce their very own light in the darkest habitats on the planet. This episode, we explore glowing life: how they do it, what they use it for, and what we can tell about how this remarkable ability came to be.

In the news: painted turtles, dinosaur herbivores, human brains, and insect ears.

Time markers:
Intro & Announcements: 00:00:00
News: 00:04:30
Main discussion, Part 1: 00:37:00
Main discussion, Part 2: 01:29:00
Patron question: 02:10:30

Check out our blog for bonus info and pictures:
http://commondescentpodcast.com/

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast

Follow this link for a 30-day free trial to Audible!
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You can email us at commondescentpodcast(at)gmail.com
Or send us physical mail at:
The Common Descent Podcast
1735 W State of Franklin Rd. Ste 5 #165
Johnson City, TN 37604

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 156 - Eurypterids (Sea Scorpions) Jan 07, 2023

The Paleozoic Era was home to many strange and fascinating extinct groups, and among the most eye-catching of these were the eurypterids. Colloquially called “sea scorpions,” these carnivorous aquatic arthropods came in many forms for many habitats and are now known from many amazing fossils. In this episode, we discuss what makes eurypterids distinct from similar organisms, what we know about their lifestyles, and the many ways they continue to surprise and confuse us.

In the news: Brazilian crocs, injured cats, breeding ichthyosaurs, and mammal-munching dinos.

Time markers:
Intro & Announcements: 00:00:00
News: 00:05:30
Main discussion, Part 1: 00:40:00
Main discussion, Part 2: 01:03:30
Patron question: 01:48:30

Check out our blog for bonus info and pictures:
http://commondescentpodcast.com/

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast

Follow this link for a 30-day free trial to Audible!
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You can email us at commondescentpodcast(at)gmail.com
Or send us physical mail at:
The Common Descent Podcast
1735 W State of Franklin Rd. Ste 5 #165
Johnson City, TN 37604

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

End of the Year Q&A 2022 Dec 31, 2022

Happy New Year!

It’s been an exciting and eventful year for the podcast, and we’re glad you’ve been along for the ride! As usual, this is our annual Q&A where we answer the many, many questions our listeners submitted – the scientific, the silly, and the personal.

Thanks as always to all of our listeners, our Patrons, our special guests, and to everyone who supports the podcast in ways big and small.

See you next year.

Check out our blog for bonus info and pictures:
http://commondescentpodcast.com/

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast

Follow this link for a 30-day free trial to Audible!
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You can email us at commondescentpodcast(at)gmail.com
Or send us physical mail at:
The Common Descent Podcast
1735 W State of Franklin Rd. Ste 5 #165
Johnson City, TN 37604

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Episode 155 - Gymnosperms Dec 24, 2022

It’s a great time of year to talk about conifers! Also their cousins: cycads, ginkgos, and others! Gymnosperms don’t get nearly as much love and attention as their flowering counterparts, the inescapable angiosperms, but they nonetheless have their own fascinating history going all the way back to some of the earliest forests on Earth. This episode, we’re joined once again by our favorite paleobotanist Dr. Aly Baumgartner to discuss what makes gymnosperms unique, what has made them so successful for hundreds of millions of years, and how these incredible plants have changed the world.

In the news: fossil-finding robots, super-old DNA, ankylosaur clubs, and snake sex organs.

Time markers:
Intro & Announcements: 00:00:00
News: 00:06:45
Main discussion, Part 1: 00:41:30
Main discussion, Part 2: 01:38:30
Patron question: 02:36:30

Check out our blog for bonus info and pictures:
http://commondescentpodcast.com/

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast

Follow this link for a 30-day free trial to Audible!
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Or make a one-time donation via PayPal: https://tinyurl.com/4c68u4hp

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You can email us at commondescentpodcast(at)gmail.com
Or send us physical mail at:
The Common Descent Podcast
1735 W State of Franklin Rd. Ste 5 #165
Johnson City, TN 37604

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 154 - Live Birth Dec 10, 2022

Viviparity is the reproductive style where embryos develop inside a parent’s body instead of inside an egg the parent lays. It’s a very familiar habit to us placental mammals, but it’s also an extremely widespread and diverse feature of life. Seriously, it’s ridiculous just how many times viviparity has evolved and just how many different ways species have found to be viviparous. In this episode we’ll answer such questions as: How and why does viviparity evolve? What features vary from one viviparous group to the next? And how do we identify viviparous animals in the fossil record?

In the news: army ants, oldest lizards, beaver families, and swimming dinosaurs.

Time markers:
Intro & Announcements: 00:00:00
News: 00:04:30
Main discussion, Part 1: 00:33:30
Main discussion, Part 2: 01:13:30
Patron question: 01:46:30

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

The 2022 End of the Year Q&A Form is LIVE! Submit your question now!
https://forms.gle/GTgew75GmVxAKejt6

Follow this link for a 30-day free trial to Audible!
www.audibletrial.com/CommonDescent

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast

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You can email us at commondescentpodcast(at)gmail.com
Or send us physical mail at:
The Common Descent Podcast
1735 W State of Franklin Rd. Ste 5 #165
Johnson City, TN 37604

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 153 - Armadillos Nov 26, 2022

Built-in body armor is common among reptiles and rare among mammals, but armadillos are the major exception. Equipped with a full set of segmented armor over their heads, backs, and tails, armadillos have been waddling around well-protected for tens of millions of years, and their ancient relatives include some of the most famous and preposterous of extinct mammals. This episode, we discuss the unique features and fascinating history of armadillos, glyptodonts, and their other ancient cousins.

In the news: roots and extinction, new croc-like reptiles, early cooking, and giant turtles.

Time markers:
Intro & Announcements: 00:00:00
News: 00:04:00
Main discussion, Part 1: 00:31:30
Main discussion, Part 2: 01:05:30
Patron question: 01:39:30

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

The 2022 End of the Year Q&A Form is LIVE! Submit your question now!
https://forms.gle/GTgew75GmVxAKejt6

Follow this link for a 30-day free trial to Audible!
www.audibletrial.com/CommonDescent

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast

Or make a one-time donation via PayPal: https://tinyurl.com/4c68u4hp

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Follow and Support us on:
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You can email us at commondescentpodcast(at)gmail.com
Or send us physical mail at:
The Common Descent Podcast
1735 W State of Franklin Rd. Ste 5 #165
Johnson City, TN 37604

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 152 - The Jehol Biota Nov 12, 2022

You might have noticed that over the last few decades, a lot of really exciting and famous fossil discoveries have been coming out of China. If you pay close attention, you might even catch that many of them are coming from the same place: the incredible fossil assemblages of the Jehol Biota. We’ve mentioned Jehol fossils many times on the podcast, but in this episode, we focus on the big picture: where do these fossils come from, why are they so incredibly well-preserved, and what are just some of the fascinating research questions we can answer by examining these amazing fossils?

In the news: bird evolution, dinosaur growth patterns, mammal speciation rates, and glowing scallops.

Time markers:
Intro & Announcements: 00:00:00
News: 00:08:00
Main discussion, Part 1: 00:48:30
Main discussion, Part 2: 01:15:30
Patron question: 01:51:30

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

The 2022 End of the Year Q&A Form is LIVE! Submit your question now!
https://forms.gle/GTgew75GmVxAKejt6

Follow this link for a 30-day free trial to Audible!
www.audibletrial.com/CommonDescent

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast

Or make a one-time donation via PayPal: https://tinyurl.com/4c68u4hp

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You can email us at commondescentpodcast(at)gmail.com
Or send us physical mail at:
The Common Descent Podcast
1735 W State of Franklin Rd. Ste 5 #165
Johnson City, TN 37604

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 151 - Tails Oct 29, 2022

Look at the various animals on Earth – or rather, look just behind them – and you’ll see a vast variety of tails! Tails and tail-like structures are often simple extensions of the body, and yet they’ve been adapted and modified into many shapes with many functions, and because they’re often so important to an animal’s lifestyle, they can be especially useful for paleontologists trying to understand ancient animals. In this episode, we’ll discuss definitions, diversity, functions, and fossils of tails.

In the news: drought fossils, early fish jaws, early fish fins, and paleontology video games.

Time markers:
Intro & Announcements: 00:00:00
News: 00:04:00
Main discussion, Part 1: 00:33:00
Main discussion, Part 2: 01:18:30
Patron question: 01:53:30

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Follow this link for a 30-day free trial to Audible!
www.audibletrial.com/CommonDescent

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast

Or make a one-time donation via PayPal: https://tinyurl.com/4c68u4hp

Find merch at the Common Descent Store! http://zazzle.com/common_descent

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You can email us at commondescentpodcast(at)gmail.com
Or send us physical mail at:
The Common Descent Podcast
1735 W State of Franklin Rd. Ste 5 #165
Johnson City, TN 37604

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Spook-E - Mimics Oct 29, 2022

Welcome ... to Spookulative Evolution.

October is here, and that means it’s time for Spook-E! Each episode throughout this month, we’re choosing a monster and discussing how it – or something like it – might evolve under the rules of evolution and natural selection, pulling inspiration from organisms of the real world. This year’s theme: monsters of Dungeons and Dragons.

This episode, we delve into a paranoia-inducing scourge of dungeons. What hypothetical natural scenario might cultivate a shape-shifting ambush hunter that disguises itself as inanimate objects? Our creatures to create this time: Mimics.

Join the Common Descent Discord server for more Spook-E discussion! https://discord.gg/CwPBxdh9Ev

And share your Spook-E musings on social media with the hashtag #SpookE

Check out our blog for podcast info, fan art, and more!
http://commondescentpodcast.wordpress.com/

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast

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You can email us at commondescentpodcast(at)gmail.com
Or send us physical mail at:
The Common Descent Podcast
1735 W State of Franklin Rd. Ste 5 #165
Johnson City, TN 37604

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Spook-E - Beholders Oct 22, 2022

Welcome ... to Spookulative Evolution.

October is here, and that means it’s time for Spook-E! Each episode throughout this month, we’re choosing a monster and discussing how it – or something like it – might evolve under the rules of evolution and natural selection, pulling inspiration from organisms of the real world. This year’s theme: monsters of Dungeons and Dragons.

This episode, we gaze upon something truly alien. Can we formulate an evolutionary path to produce a malicious floating orb creature that stares at the world through many eyes? Our creatures to create this time: Beholders.

Join the Common Descent Discord server for more Spook-E discussion! https://discord.gg/CwPBxdh9Ev

And share your Spook-E musings on social media with the hashtag #SpookE

Check out our blog for podcast info, fan art, and more!
http://commondescentpodcast.wordpress.com/

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast

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You can email us at commondescentpodcast(at)gmail.com
Or send us physical mail at:
The Common Descent Podcast
1735 W State of Franklin Rd. Ste 5 #165
Johnson City, TN 37604

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Episode 150 - Stegosaurs Oct 15, 2022

Stegosaurus is one of the all-time most famous and recognizable dinosaurs, but it wasn’t alone! Its whole extended family, the stegosaurs, were medium- to large-sized herbivorous dinosaurs sporting an array of plates and spikes. This episode, we discuss the diversity and deep history of stegosaurs, what we know of their lifestyles, and of course the big questions: just what were they doing with that ridiculous armor?

In the news: Moon impacts, bird brains, Jurassic vomit, and super-old algae.

Time markers:
Intro & Announcements: 00:00:00
News: 00:05:30
Main discussion, Part 1: 00:31:00
Main discussion, Part 2: 00:58:30
Patron question: 01:48:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Follow this link for a 30-day free trial to Audible!
www.audibletrial.com/CommonDescent
Check out Riley Black’s newest book: The Last Days of the Dinosaurs

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast

Or make a one-time donation via PayPal: https://tinyurl.com/4c68u4hp

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Follow and Support us on:
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You can email us at commondescentpodcast(at)gmail.com
Or send us physical mail at:
The Common Descent Podcast
1735 W State of Franklin Rd. Ste 5 #165
Johnson City, TN 37604

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Spook-E - Displacer Beasts Oct 15, 2022

Welcome ... to Spookulative Evolution.

October is here, and that means it’s time for Spook-E! Each episode throughout this month, we’re choosing a monster and discussing how it – or something like it – might evolve under the rules of evolution and natural selection, pulling inspiration from organisms of the real world. This year’s theme: monsters of Dungeons and Dragons.

This episode, we roll out a monster that’s tough to get grasp on. From where on the tree of life might we develop a many-limbed predator with a knack for fooling the eye? Our creatures to create this time: Displacer beasts.

Join the Common Descent Discord server for more Spook-E discussion! https://discord.gg/CwPBxdh9Ev

And share your Spook-E musings on social media with the hashtag #SpookE

Check out our blog for podcast info, fan art, and more!
http://commondescentpodcast.wordpress.com/

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast

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Find merch at the Common Descent Store! http://zazzle.com/common_descent
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Or send us physical mail at:
The Common Descent Podcast
1735 W State of Franklin Rd. Ste 5 #165
Johnson City, TN 37604

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Spook-E - Owlbears Oct 08, 2022

Welcome ... to Spookulative Evolution.

October is here, and that means it’s time for Spook-E! Each episode throughout this month, we’re choosing a monster and discussing how it – or something like it – might evolve under the rules of evolution and natural selection, pulling inspiration from organisms of the real world. This year’s theme: monsters of Dungeons and Dragons.

This episode, we play with a classic chimera. How might nature select for a beast that combines the fierce features of a bear and a bird of prey? Our creatures to create this time: Owlbears.

Join the Common Descent Discord server for more Spook-E discussion! https://discord.gg/CwPBxdh9Ev

And share your Spook-E musings on social media with the hashtag #SpookE

Check out our blog for podcast info, fan art, and more!
http://commondescentpodcast.wordpress.com/

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast

Or make a one-time donation via PayPal: https://tinyurl.com/4c68u4hp
Find merch at the Common Descent Store! http://zazzle.com/common_descent
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You can email us at commondescentpodcast(at)gmail.com
Or send us physical mail at:
The Common Descent Podcast
1735 W State of Franklin Rd. Ste 5 #165
Johnson City, TN 37604

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Episode 149 - Ants Oct 01, 2022

In our modern world, ants are so ubiquitous that it’s difficult to image our planet without them, so successful that they shape the environments around them despite their tiny size, and so diverse that we couldn’t possibly discuss even a small fraction of their diversity in this one podcast episode. We’ll touch on some of what makes ants unique, list a few of our favorite examples of modern ant lifestyles, and dive into what is known about their ancient history and evolution. Get ready for fire ants, bullet ants, dinosaur ants, hell ants, and more.

In the news: mysterious maybe-molluscs, giant otters, tuatara cousins, and fossil fish organs.

Time markers:
Intro & Announcements: 00:00:00
News: 00:05:30
Main discussion, Part 1: 00:31:30
Main discussion, Part 2: 01:16:30
Patron question: 01:54:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Follow this link for a 30 day free trial to Audible!
www.audibletrial.com/CommonDescent

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast

Or make a one-time donation via PayPal: https://tinyurl.com/4c68u4hp

Find merch at the Common Descent Store! http://zazzle.com/common_descent

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Twitter: https://twitter.com/CommonDescentPC
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PodBean: https://commondescentpodcast.podbean.com/
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You can email us at commondescentpodcast(at)gmail.com
Or send us physical mail at:
The Common Descent Podcast
1735 W State of Franklin Rd. Ste 5 #165
Johnson City, TN 37604

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 148 - Gliding Sep 17, 2022

Powered flight is hard, and evolution has only produced it a few times. Gliding, however, is much easier and much more common. In fact, there is an astonishing diversity of gliding organisms to be found in our modern world as well as in the fossil record, with an incredible variety in the adaptations they use to sail through the sky. This episode, we’ll explore what it takes to glide and what patterns we see in gliding evolution, and we’ll also geek out about all the amazing sizes, shapes, and strategies of gliders.

In the news: coral mutations, African dinosaurs, croc brains, and ancient amputation.

Time markers:
Intro & Announcements: 00:00:00
News: 00:07:00
Main discussion, Part 1: 00:41:30
Main discussion, Part 2: 01:28:30
Patron question: 02:22:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Support Mouse’s classroom!
https://www.donorschoose.org/classroom/mx-hecht

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast

Or make a one-time donation via PayPal: https://tinyurl.com/4c68u4hp

Find merch at the Common Descent Store! http://zazzle.com/common_descent

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Twitter: https://twitter.com/CommonDescentPC
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You can email us at commondescentpodcast(at)gmail.com
Or send us physical mail at:
The Common Descent Podcast
1735 W State of Franklin Rd. Ste 5 #165
Johnson City, TN 37604

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 147 - Genetics Sep 03, 2022

For many years, scientists pondered the question: how and why do offspring inherit traits from their parents? And key to the answer to that question is another question: what determines an organism’s traits in the first place? The pursuit of these answers ultimately led to the modern field of genetics, which itself is crucial to the study of evolution. This episode, we address just a few key points on this vast topic, with a focus on how our understanding of genetics allows us to interpret the history of evolution on our planet.

In the news: early fruit-eating, giant Australian birds, beaver evolution, and human speech.

Time markers:
Intro & Announcements: 00:00:00
News: 00:06:00
Main discussion, Part 1: 00:37:30
Main discussion, Part 2: 01:08:30
Patron question: 02:00:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast

Or make a one-time donation via PayPal: https://tinyurl.com/4c68u4hp

Find merch at the Common Descent Store! http://zazzle.com/common_descent

Join the Common Descent Discord server! https://discord.gg/CwPBxdh9Ev

Follow and Support us on:
Twitter: https://twitter.com/CommonDescentPC
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PodBean: https://commondescentpodcast.podbean.com/
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You can email us at commondescentpodcast(at)gmail.com
Or send us physical mail at:
The Common Descent Podcast
1735 W State of Franklin Rd. Ste 5 #165
Johnson City, TN 37604

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 146 - The Jurassic-Cretaceous Transition Aug 20, 2022

Every period of geologic time is distinguished by its own environmental and ecological features, and every boundary between time periods is characterized by change. The boundary between the Jurassic Period and the Cretaceous Period is mostly marked by mystery. Was there a mass extinction? Were there catastrophic changes? Where even is the boundary exactly? In this episode, we’ll discuss the answers – or lack thereof – to these questions and more as we explore this surprisingly enigmatic time in Earth history.

In the news: croc conservation, diving whales, aquatic mammal-cousins, and sauropod feet.

Time markers:
Intro & Announcements: 00:00:00
News: 00:06:15
Main discussion, Part 1: 00:36:30
Main discussion, Part 2: 01:00:30
Patron question: 01:33:30

We recently appeared on the Juras-Sick-Park-Cast!
https://jurassickparkcast.blogspot.com/2022/07/episode-20-when-dinosaurs-ruled-earth.html

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast

Or make a one-time donation via PayPal: https://tinyurl.com/4c68u4hp

Find merch at the Common Descent Store! http://zazzle.com/common_descent

Join the Common Descent Discord server! https://discord.gg/CwPBxdh9Ev

Follow and Support us on:
Twitter: https://twitter.com/CommonDescentPC
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PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2

You can email us at commondescentpodcast(at)gmail.com
Or send us physical mail at:
The Common Descent Podcast
1735 W State of Franklin Rd. Ste 5 #165
Johnson City, TN 37604

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 145 - Photosynthesis Aug 06, 2022

We live in a solar-powered world. Photosynthesis is the process by which some organisms (notably plants and cyanobacteria) harness the energy of sunlight to power their own metabolism, in the process creating the sugars (food) which provide a source of energy for all sorts of other organisms, not to mention releasing oxygen as well. Photosynthesis is the reason our planet is the way it is, from the diversity of life to the composition of the atmosphere. In this episode, we discuss the diversity of photosynthesis and photosynthesizers, what we know about the evolutionary history of the process, and how it has profoundly changed the world.

In the news: freshwater plesiosaurs, endothermy evolution, whale shark diets, and bone-crushing dogs.

Time markers:
Intro & Announcements: 00:00:00
News: 00:08:30
Main discussion, Part 1: 00:43:30
Main discussion, Part 2: 01:45:30
Patron question: 02:31:00
Please forgive our mismatched audio in the Intro and News sections.

We recently appeared on the Juras-Sick-Park-Cast!
https://jurassickparkcast.blogspot.com/2022/07/episode-20-when-dinosaurs-ruled-earth.html

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast

Or make a one-time donation via PayPal: https://tinyurl.com/4c68u4hp

Find merch at the Common Descent Store! http://zazzle.com/common_descent

Join the Common Descent Discord server! https://discord.gg/CwPBxdh9Ev

Follow and Support us on:
Twitter: https://twitter.com/CommonDescentPC
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PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2

You can email us at commondescentpodcast(at)gmail.com
Or send us physical mail at:
The Common Descent Podcast
1735 W State of Franklin Rd. Ste 5 #165
Johnson City, TN 37604

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 144 - Evolutionary Gigantism and Dwarfism Jul 23, 2022

The history of evolution is full of species of unusual size, big and small. But the factors that lead to evolutionary miniaturization or embiggening can be quite varied and are not all fully agreed-upon by scientists. This episode, we discuss what it means for life to evolve huge or tiny, what trends researchers have identified in body size evolution, and which of those trends actually holds up to further scrutiny.

In the news: krait venom, a frozen pup, parental water bugs, and giant storks.

Time markers:
Intro & Announcements: 00:00:00
News: 00:06:00
Main discussion, Part 1: 00:39:30
Main discussion, Part 2: 01:32:30
Patron question: 02:10:30

IT’S SNAKE MONTH! Check out our Snake Month activities on our social media, Discord, and Patreon!

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast

Or make a one-time donation via PayPal: https://tinyurl.com/4c68u4hp

Find merch at the Common Descent Store! http://zazzle.com/common_descent

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Follow and Support us on:
Twitter: https://twitter.com/CommonDescentPC
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PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2

You can email us at commondescentpodcast(at)gmail.com
Or send us physical mail at:
The Common Descent Podcast
1735 W State of Franklin Rd. Ste 5 #165
Johnson City, TN 37604

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Saving Snakes with Hiral Naik Jul 16, 2022

Happy Snake Month!

In this bonus episode, we discuss snake conservation and geek out about snakes with special guest Hiral Naik of Save the Snakes. We talk about what it takes to save snakes, why snakes are so worthy of our attention and respect, and why education is such a major part of snake conservation!

Follow Hiral on
Twitter: @HiralNaik25
Instagram: @hirals_hive

Save The Snakes: https://savethesnakes.org/
Twitter: @savethesnakes
Instagram: @savingsnakes
Snake Education and Community Awareness Program (SECAP): https://www.secap.info/

World Snake Day: https://www.snakes.ngo/wsd/

Check out more Snake Month activities on our social media, Discord, and Patreon (links below)!

Check out our blog for more info about us and our episodes:
http://commondescentpodcast.wordpress.com/

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast

Or make a one-time donation via PayPal: https://tinyurl.com/4c68u4hp

Find merch at the Common Descent Store! http://zazzle.com/common_descent

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PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2

You can email us at commondescentpodcast(at)gmail.com
Or send us physical mail at:
The Common Descent Podcast
1735 W State of Franklin Rd. Ste 5 #165
Johnson City, TN 37604

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org

Episode 143 - Monitor Lizards Jul 09, 2022

Monitor lizards are charismatic, surprisingly diverse, full of surprising biological features, and on top of all that, they include the largest terrestrial lizards in history. Also, they’re closely related to snakes (it is Snake Month, after all). That’s a cool group of lizards! In this episode, we discuss what makes these lizards so unique and fascinating, and we dive into their long but often mysterious fossil record to address some major questions about monitor evolution.

In the news: vampire squids, dinosaur eggs, octopus intelligence, and pickled snakes.

Time markers:
Intro & Announcements: 00:00:00
News: 00:06:45
Main discussion, Part 1: 00:38:00
Main discussion, Part 2: 01:19:30
Patron question: 01:57:00

IT’S SNAKE MONTH! Check out our Snake Month activities on our social media, Discord, and Patreon!

Links to the organizations we mentioned in the Intro:
National Network of Abortion Funds: https://abortionfunds.org/about/
Answer: https://answer.rutgers.edu/page/aboutusintro

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast

Or make a one-time donation via PayPal: https://tinyurl.com/4c68u4hp

Find merch at the Common Descent Store! http://zazzle.com/common_descent

Join the Common Descent Discord server! https://discord.gg/CwPBxdh9Ev

Follow and Support us on:
Twitter: https://twitter.com/CommonDescentPC
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PodBean: https://commondescentpodcast.podbean.com/
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You can email us at commondescentpodcast(at)gmail.com
Or send us physical mail at:
The Common Descent Podcast
1735 W State of Franklin Rd. Ste 5 #165
Johnson City, TN 37604

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 142 - Phytosaurs Jun 25, 2022

Take a walk along the waterways of the Late Triassic, and you could easily think it was a world full of crocodiles! But in fact, those are not crocs, but phytosaurs, a group of predatory reptiles that represent not only one of the oldest groups of carnivorous reptiles to achieve a near-global distribution, but also one of evolution's most famous cases of convergent evolution. So, what features did phytosaurs share with crocs? Where did they differ? And just how croc-like were their lifestyles? Listen in and find out!

In the news: dinosaur belly buttons, tiny frogs, snake venom, and giant dwarf crocs.

Time markers:
Intro & Announcements: 00:00:00
News: 00:05:45
Main discussion, Part 1: 00:41:00
Main discussion, Part 2: 01:11:30
Patron question: 01:47:00

IT’S CROC MONTH! Check out our Croc Month activities on our social media, Discord, and Patreon!

We recently made a guest appearance on Third Pod From the Sun, where we discussed the K-Pg mass extinction! https://thirdpodfromthesun.com/2022/06/10/extinctions-dinosaurs-a-big-rock-andclimate-change/

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast

Or make a one-time donation via PayPal: https://tinyurl.com/4c68u4hp

Find merch at the Common Descent Store! http://zazzle.com/common_descent

Join the Common Descent Discord server! https://discord.gg/CwPBxdh9Ev

Follow and Support us on:
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast
Instagram: @commondescentpodcast
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PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2

You can email us at commondescentpodcast(at)gmail.com
Or send us physical mail at:
The Common Descent Podcast
1735 W State of Franklin Rd. Ste 5 #165
Johnson City, TN 37604

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Silver Screen Science - Jurassic World: Dominion Jun 20, 2022

Once again, we return to the Jurassic franchise! And as usual with these movies, there’s lots to discuss about the portrayal of ancient animals, scientific concepts, and scientists.

Another trilogy concludes – Jurassic World: Dominion (2022)

_

IT’S CROC MONTH! Check out our Croc Month activities on our social media, Discord, and Patreon!

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast

Or make a one-time donation via PayPal: https://tinyurl.com/4c68u4hp

Find merch at the Common Descent Store! http://zazzle.com/common_descent

Join the Common Descent Discord server! https://discord.gg/CwPBxdh9Ev

Follow and Support us on:
Twitter: https://twitter.com/CommonDescentPC
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PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2

You can email us at commondescentpodcast(at)gmail.com
Or send us physical mail at:
The Common Descent Podcast
1735 W State of Franklin Rd. Ste 5 #165
Johnson City, TN 37604

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Conserving Crocs with Dr. Marisa Tellez Jun 17, 2022

Happy Croc Month!

In this special episode, we talk croc conservation and geek out about crocs with special guest Dr. Marisa Tellez of the Crocodilian Research Coalition. We learn about what it’s like to study crocs in the wild, we discuss the importance of public education, and we hear some of Marisa’s amazing croc tales!

Follow Marisa on Instagram and Twitter: @crocparasites13

CRC Info:
Webpage: www.crocodileresearchcoalition.org
Facebook and Pinterest: Crocodile Research Coalition
Instagram: @crocodileresearchcoalition
Twitter: @CrocResCoal
TikTok: crc_crocresearchcoal

Check out more Croc Month activities on our social media, Discord, and Patreon (links below)!

Check out our blog for more info about us and our episodes:
http://commondescentpodcast.wordpress.com/

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast

Or make a one-time donation via PayPal: https://tinyurl.com/4c68u4hp

Find merch at the Common Descent Store! http://zazzle.com/common_descent

Follow, Join, and Support us on:
Discord: https://discord.gg/CwPBxdh9Ev
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast
Instagram: @commondescentpodcast
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw
PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2

You can email us at commondescentpodcast(at)gmail.com
Or send us physical mail at:
The Common Descent Podcast
1735 W State of Franklin Rd. Ste 5 #165
Johnson City, TN 37604

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Episode 141 - Supercontinents Jun 11, 2022

Perhaps you’ve heard of Pangaea, the supercontinent that existed when our modern continents were puzzle-pieced together. But have you heard of Rodinia? Or Columbia? Scientists have only come to realize in the last few decades that supercontinents are a recurring feature of our planet. This episode, we discuss what counts as a supercontinent, what evidence they leave behind, and the various ways they impact just about every other feature of our planet as they continuously come together and break apart.

In the news: croc resilience, American cheetahs, dome-headed giraffoids, and traveling termites.

Time markers:
Intro & Announcements: 00:00:00
News: 00:05:00
Main discussion, Part 1: 00:43:00
Main discussion, Part 2: 01:14:30
Patron question: 02:03:30

IT’S CROC MONTH! Check out our Croc Month activities on our social media, Discord, and Patreon!

We recently made a guest appearance on Third Pod From the Sun, where we discussed the K-Pg mass extinction! https://thirdpodfromthesun.com/2022/06/10/extinctions-dinosaurs-a-big-rock-andclimate-change/

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast

Or make a one-time donation via PayPal: https://tinyurl.com/4c68u4hp

Find merch at the Common Descent Store! http://zazzle.com/common_descent

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PodBean: https://commondescentpodcast.podbean.com/
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You can email us at commondescentpodcast(at)gmail.com
Or send us physical mail at:
The Common Descent Podcast
1735 W State of Franklin Rd. Ste 5 #165
Johnson City, TN 37604

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Silver Screen Science – Prehistoric Planet Jun 04, 2022

Recently, BBC Studios put out a new documentary series set in the world of the Late Cretaceous, so we’re doing our first-ever Silver Screen Science discussion focused on a documentary!

The documentary in question: Prehistoric Planet.

Happy Croc Month! Special things are going on throughout this (and next) month in all the places linked below!

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast

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You can email us at commondescentpodcast(at)gmail.com
Or send us physical mail at:
The Common Descent Podcast
1735 W State of Franklin Rd. Ste 5 #165
Johnson City, TN 37604

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org

Episode 140 - Horns and Antlers May 28, 2022

Who doesn’t like a flashy bit of headgear? A wide variety of cranial ornamentation is found on a wide variety of animals: sharp horns, branching antlers, bumpy knobs, and more. In this episode, we break down what technically counts as a “horn” (you’ll be unsurprised to learn there isn’t a simple answer!), the vast diversity of animal headgear today and in the fossil record, and the various ways animals have found to use these remarkable structures.

In the news: sabertoothed faces, head origins, dinosaur climates, and ancient false gharials.

Time markers:
Intro & Announcements: 00:00:00
News: 00:06:00
Main discussion, Part 1: 00:40:00
Main discussion, Part 2: 01:20:00
Patron question: 02:16:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast

Or make a one-time donation via PayPal: https://tinyurl.com/4c68u4hp

Find merch at the Common Descent Store! http://zazzle.com/common_descent

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You can email us at commondescentpodcast(at)gmail.com
Or send us physical mail at:
The Common Descent Podcast
1735 W State of Franklin Rd. Ste 5 #165
Johnson City, TN 37604

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 139 - Vultures May 14, 2022

Scavenging isn’t easy. There’s a reason most scavengers are only part-time carrion-eaters. But vultures are exquisitely adapted for a dedicated lifestyle of finding and feasting on carcasses, and as a result, they’ve made themselves invaluable members of ecosystems all over the globe. In this episode, we explore vulture evolution, their ancient history, and the adaptations that make them the world’s most famous scavengers.

In the news: insect wings, trilobite mating, a “small” sauropod, and post-Cretaceous plants.

Time markers:
Intro & Announcements: 00:00:00
News: 00:04:00
Main discussion, Part 1: 00:36:00
Main discussion, Part 2: 01:16:00
Patron question: 01:44:30

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast

Or make a one-time donation via PayPal: https://tinyurl.com/4c68u4hp

Find merch at the Common Descent Store! http://zazzle.com/common_descent

Join the Common Descent Discord server! https://discord.gg/CwPBxdh9Ev

Follow and Support us on:
Twitter: https://twitter.com/CommonDescentPC
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PodBean: https://commondescentpodcast.podbean.com/
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You can email us at commondescentpodcast(at)gmail.com
Or send us physical mail at:
The Common Descent Podcast
1735 W State of Franklin Rd. Ste 5 #165
Johnson City, TN 37604

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 138 - The Moon Apr 30, 2022

It's an easy mistake to think of the Moon as a simple accessory to our planet, but the Earth and Moon are a close-knit pair, and the Moon influences everything from our tides to our magnetic fields to the brightness of our nights. All life on Earth has evolved in the presence of the Moon, and so life on Earth can't be fully understood without considering our cosmic companion. In this episode, we discuss how the Moon influences life past and present, and what we know about the deep history of the Earth-Moon relationship.

In the news: pterosaur colors, a glowing spider, deformed pollen, and a long-toed tetrapod.

Time markers:
Intro & Announcements: 00:00:00
News: 00:04:00
Main discussion, Part 1: 00:36:30
Main discussion, Part 2: 01:16:30
Patron question: 01:55:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast

Or make a one-time donation via PayPal: https://tinyurl.com/4c68u4hp

Find merch at the Common Descent Store! http://zazzle.com/common_descent

Join the Common Descent Discord server! https://discord.gg/CwPBxdh9Ev

Follow and Support us on:
Twitter: https://twitter.com/CommonDescentPC
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PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2

You can email us at commondescentpodcast(at)gmail.com
Or send us physical mail at:
The Common Descent Podcast
1735 W State of Franklin Rd. Ste 5 #165
Johnson City, TN 37604

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 137 - Fossilization Apr 16, 2022

We talk about fossils a lot on this podcast – every episode, in fact – but we rarely take the time to discuss how fossils get the way they are. This is a crucial subject, because the fossilization process is a filter, and nothing comes through the filter unaltered, and many things don’t come through at all. In this episode, we talk about how fossils typically form, how we study this process, and why it’s so important for paleontologists to understand fossilization.

In the news: giant croc tracks, injured dino footprints, evolution in cities, and ancient snakey-ness.

Time markers:
Intro & Announcements: 00:00:00
News: 00:04:00
Main discussion, Part 1: 00:41:00
Main discussion, Part 2: 01:16:00
Patron question: 01:52:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast

Or make a one-time donation via PayPal: https://tinyurl.com/4c68u4hp

Find merch at the Common Descent Store! http://zazzle.com/common_descent

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You can email us at commondescentpodcast(at)gmail.com
Or send us physical mail at:
The Common Descent Podcast
1735 W State of Franklin Rd. Ste 5 #165
Johnson City, TN 37604

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 136 - Seahorses Apr 02, 2022

Seahorses are very strange fish, with their upright posture, tube-like mouths, and various other unusual features. Along with their cousins in the family Syngnathidae, seahorses have been the subject of much research into how they came about their bizarre body plans and lifestyles. In this episode, we discuss a bit of what we know of how seahorses (and their relatives) do what they do, and how they came to do it.

In the news: trilobite predators, early jaws, de-extinction troubles, and spinosaur bone density.

Time markers:
Intro & Announcements: 00:00:00
News: 00:04:00
Main discussion, Part 1: 00:39:00
Main discussion, Part 2: 01:26:30
Patron question: 02:08:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast

Or make a one-time donation via PayPal: https://tinyurl.com/4c68u4hp

Find merch at the Common Descent Store! http://zazzle.com/common_descent

Join the Common Descent Discord server! https://discord.gg/CwPBxdh9Ev

Follow and Support us on:
Twitter: https://twitter.com/CommonDescentPC
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PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2

You can email us at commondescentpodcast(at)gmail.com
Or send us physical mail at:
The Common Descent Podcast
1735 W State of Franklin Rd. Ste 5 #165
Johnson City, TN 37604

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Patron Mini-Episode Compilation #2 Mar 28, 2022

Our highest-level supporters on Patreon get their own special mini-episode on a topic of their choosing! We released the first five in a compilation a while ago, and now that we’ve done five more, here’s another compilation for everyone to enjoy.

Special thanks to our Patrons for their generous contributions, and thanks also to our special guest, Laura!

00:00:00 Intro
00:02:15 Crinoids for Lewis
00:16:15 Acrocanthosaurus for Will
00:36:30 The Hadean for Jordan
00:52:30 Fainting Goats for Mike
01:12:30 Scabies for Andreas

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast

Or make a one-time donation via PayPal: https://tinyurl.com/4c68u4hp

Find merch at the Common Descent Store! http://zazzle.com/common_descent

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Twitter: https://twitter.com/CommonDescentPC
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PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2

You can email us at commondescentpodcast(at)gmail.com
Or send us physical mail at:
The Common Descent Podcast
1735 W State of Franklin Rd. Ste 5 #165
Johnson City, TN 37604

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 135 - Seeds Mar 19, 2022

Every plant starts somewhere, and often that somewhere is inside a seed. Seeds are among the most diverse and important evolutionary innovations of plants, allowing species to survive, thrive, and travel between generations in extraordinary ways. This episode, Aly joins us to discuss how seeds do what they do, how seeds have evolved over time, and how seeds are invaluable resources for paleontologists seeking to understand plants of the past.

In the news: early octopus-cousins, early tuatara cousins, evolution of walking, and how sauropods moved.

Time markers:
Intro & Announcements: 00:00:00
News: 00:04:00
Main discussion, Part 1: 00:46:30
Main discussion, Part 2: 01:39:00
Patron question: 02:22:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast

Or make a one-time donation via PayPal: https://tinyurl.com/4c68u4hp

Find merch at the Common Descent Store! http://zazzle.com/common_descent

Join the Common Descent Discord server! https://discord.gg/CwPBxdh9Ev

Follow and Support us on:
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PodBean: https://commondescentpodcast.podbean.com/
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You can email us at commondescentpodcast(at)gmail.com
Or send us physical mail at:
The Common Descent Podcast
1735 W State of Franklin Rd. Ste 5 #165
Johnson City, TN 37604

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

The Art of Common Descent with Rob Soto Mar 14, 2022

Paleoartist Rob Soto has created some fantastic artwork for the podcast over the years. Most recently, for our Five Year Anniversary celebration, he produced our Five Year logo and a series of movie-poster-style depictions of famous fossil localities, all now available on our merch store!

In this special episode, we continue our Five Year celebration by sitting down with Rob to discuss his background in art and the process of creating the Art of Common Descent.

Find Rob online: https://linktr.ee/RaptorRobb

You can check out Rob’s art and other merchandise on our Zazzle store: http://zazzle.com/common_descent

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast

Or make a one-time donation via PayPal: https://tinyurl.com/4c68u4hp

Join the Common Descent Discord server! https://discord.gg/CwPBxdh9Ev

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You can email us at commondescentpodcast(at)gmail.com
Or send us physical mail at:
The Common Descent Podcast
1735 W State of Franklin Rd. Ste 5 #165
Johnson City, TN 37604

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Episode 134 – Sanguivores (Blood-Eaters) Mar 05, 2022

Blood is nutritious, easy to digest, and not hard to come by, so it’s unsurprising – if a bit unsettling – that thousands of species have evolved a taste for the stuff. From birds to bats to bugs, the diversity of sanguivores includes a wide variety of body plans, feeding strategies, and unique evolutionary histories, all converging upon a similar set of behaviors and features honed for a diet of blood. Be aware, this episode is, at times, kinda gross.

In the news: a new spinosaur, a new pterosaur, a new abelisaur, and a new euphorbia.

Time markers:
Intro & Announcements: 00:00:00
News: 00:06:00
Main discussion, Part 1: 00:39:30
Main discussion, Part 2: 01:27:00
Patron question: 02:19:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast

Or make a one-time donation via PayPal: https://tinyurl.com/4c68u4hp

Find merch at the Common Descent Store! http://zazzle.com/common_descent

Join the Common Descent Discord server! https://discord.gg/CwPBxdh9Ev

Follow and Support us on:
Twitter: https://twitter.com/CommonDescentPC
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PodBean: https://commondescentpodcast.podbean.com/
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You can email us at commondescentpodcast(at)gmail.com
Or send us physical mail at:
The Common Descent Podcast
1735 W State of Franklin Rd. Ste 5 #165
Johnson City, TN 37604

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 133 - Symbiosis Feb 19, 2022

None of us are alone. Like, in the literal, biological sense. Symbiotic relationships – close interactions between unrelated organisms – are a defining feature of life on Earth. Each of our bodies has its own share of parasites, hitchhikers, and tiny helpers, and some of the most prominent ecosystems on Earth function only by virtue of the symbiotic relationships at their foundations. In this episode, we touch on the incredible diversity and impact of symbiosis, and how the deep history of these relationships has created the world we know today.

In the news: sick sauropods, puking pterosaurs, jumping genes in snakes, and dino-eating crocs.

Time markers:
Intro & Announcements: 00:00:00
News: 00:05:00
Main discussion, Part 1: 00:39:30
Main discussion, Part 2: 01:24:30
Patron question: 02:05:30

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast

Or make a one-time donation via PayPal: https://tinyurl.com/4c68u4hp

Find merch at the Common Descent Store! http://zazzle.com/common_descent

Join the Common Descent Discord server! https://discord.gg/CwPBxdh9Ev

Follow and Support us on:
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PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2

You can email us at commondescentpodcast(at)gmail.com
Or send us physical mail at:
The Common Descent Podcast
1735 W State of Franklin Rd. Ste 5 #165
Johnson City, TN 37604

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 132 - Mary and Louis Leakey Feb 05, 2022

Episode 132 – Mary and Louis Leakey

Happy Darwin Day!

Mary and Louis Leakey are two of the biggest names in the history of paleoanthropology and human evolution, and they’re one of history’s most impressive scientific duos. In this episode, our special guest takes us through the tales of the Leakey’s most important scientific work, their personal lives, and the ongoing impact they’ve had on modern science.

Our guest this episode is Meredith Johnson, Communications Director at the Leakey Foundation and host of Origin Stories!
Learn more here: https://leakeyfoundation.org/category/origin-stories/
Follow the Leakey Foundation at @TheLeakeyFndtn
Follow Origin Stories at @OriginsPodcast

In the news: artificial intelligence meets fossils, red nectar evolution, arthropod nervous systems, and ancient human diets.

Time markers:
Intro & Announcements: 00:00:00
News: 00:08:30
Main discussion, Part 1: 00:46:30
Main discussion, Part 2: 01:27:00
Patron question: 02:08:30

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast

Or make a one-time donation via PayPal: https://tinyurl.com/4c68u4hp

Find merch at the Common Descent Store! http://zazzle.com/common_descent

Join the Common Descent Discord server! https://discord.gg/CwPBxdh9Ev

Follow and Support us on:
Twitter: https://twitter.com/CommonDescentPC
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PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2

You can email us at commondescentpodcast(at)gmail.com
Or send us physical mail at:
The Common Descent Podcast
1735 W State of Franklin Rd. Ste 5 #165
Johnson City, TN 37604

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 131 - Volcanoes Jan 22, 2022

Volcanoes are fascinating, devastating, and fundamental to Earth systems. Volcanic eruptions can transform ecosystems, landscapes, and even the atmosphere, and at their most extreme, the effects of volcanism can be global and long-lasting. In this overstuffed episode, we discuss the many forms and features of volcanic activity, and we take a look at the complex and dramatic interaction between volcanoes and life on Earth.

In the news: ankylosaur brains, an Australian rainforest, donkey hybrids, and the Tonga volcanic eruption.

Time markers:
Intro & Announcements: 00:00:00
News: 00:06:30
Main discussion, Part 1: 00:44:30
Main discussion, Part 2: 01:27:30
Patron question: 02:37:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast

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The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 130 - Sense of Smell Jan 08, 2022

With every breath you take, you’re collecting information about your surroundings. We humans are actually pretty skilled smellers, as these things go, but olfactory abilities vary widely across the animal kingdom (and beyond). In this episode, we discuss how smelling works, what smelling is good for, and how scientists explore the evolutionary history of smell.

In the news: giant ichthyosaurs, giant millipedes, long-tongued birds, and oviraptorid embryos.

Time markers:
Intro & Announcements: 00:00:00
News: 00:05:30
Main discussion, Part 1: 00:39:00
Main discussion, Part 2: 01:27:30
Patron question: 02:07:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast

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You can email us at commondescentpodcast(at)gmail.com
Or send us physical mail at:
The Common Descent Podcast
1735 W State of Franklin Rd. Ste 5 #165
Johnson City, TN 37604

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

End of the Year Q&A 2021 Dec 31, 2021

Happy New Year!

Thanks as always to everyone who submitted questions for the Q&A. Thanks to everyone for listening, sharing, and supporting the podcast this year and for our whole run of nearly five years. We make the podcast, but you, our audience, make the podcast possible.

More to come. See you in 2022.

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

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The Common Descent Podcast
1735 W State of Franklin Rd. Ste 5 #165
Johnson City, TN 37604

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Episode 129 - Rhinos Dec 25, 2021

Today, rhinos are famous for their large size and impressive horns (and their distressing conservation status, sadly), but modern rhinos are only a small sample of what rhinos have been over time. Thanks to a surprisingly good rhino fossil record, we have a pretty good picture of how these animals got started and of the surprising forms they’ve taken since, from horse-like runners to hippo-shaped waders to gargantuan behemoths. This episode, we discuss rhinos as we know them, rhinos when they were weird, and a few rhino-y things that aren’t rhinos at all.

In the news: ancient croc hunting, dinosaur colors, shrinking orangutans, and ammonite soft tissue.

Time markers:
Intro & Announcements: 00:00:00
News: 00:04:30
Main discussion, Part 1: 00:35:30
Main discussion, Part 2: 01:13:30
Patron question: 02:12:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast

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You can email us at commondescentpodcast(at)gmail.com
Or send us physical mail at:
The Common Descent Podcast
1735 W State of Franklin Rd. Ste 5 #165
Johnson City, TN 37604

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 128 - The Deep Sea Dec 11, 2021

Far below the ocean surface is a vast environment of cold, darkness, very scarce food, and surprisingly diverse life. Deep sea life is quite mysterious, in part because of their unusual adaptations for surviving in such tough habitats, and also because it’s very difficult to study organisms of the deep, modern or fossil. In this episode, we discuss what is known about the adaptations, evolutionary history, and diversity of life in the deep sea.

In the news: blade-tailed ankylosaurs, ostrich-like dinosaurs, shrimps in clams, and carnivorous ichthyosaurs.

Time markers:
Intro & Announcements: 00:00:00
News: 00:04:00
Main discussion, Part 1: 00:35:00
Main discussion, Part 2: 01:25:30
Patron question: 02:01:30

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

We're now taking questions for our End of the Year Q&A! Submit your question here: https://forms.gle/Q3jHtLSp5CdFuAuL9

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast

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You can email us at commondescentpodcast(at)gmail.com
Or send us physical mail at:
The Common Descent Podcast
1735 W State of Franklin Rd. Ste 5 #165
Johnson City, TN 37604

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Silver Screen Science – Prologue, Jurassic World: Dominion Dec 04, 2021

Surprise! A special short(ish) episode of Silver Screen Science to discuss the Prologue/Trailer for Jurassic World: Dominion!

Time markers:
Science Discussion: 00:00
More Thoughts: 25:00

We're now taking questions for our End of the Year Q&A! Submit your question here: https://forms.gle/Q3jHtLSp5CdFuAuL9

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast

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The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Episode 127 - The Hell Creek Formation Nov 27, 2021

Located across a wide area of the Upper Great Plains of the United States, the Hell Creek Formation is one of the world’s premier locations for studying the Age of Dinosaurs, especially trends of evolution – and extinction – at the very end of the Mesozoic Era. In this episode, we discuss the ancient history and scientific history of the region, including some famous finds and groundbreaking research.

In the news: giant ammonites, extinction beetles, baby pterosaurs, and the controversial Tetrapodophis.

Time markers:
Intro & Announcements: 00:00:00
News: 00:04:00
Main discussion, Part 1: 00:40:30
Main discussion, Part 2: 01:02:30
Patron question: 01:37:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

We're now taking questions for our End of the Year Q&A! Submit your question here: https://forms.gle/Q3jHtLSp5CdFuAuL9

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast

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You can email us at commondescentpodcast(at)gmail.com
Or send us physical mail at:
The Common Descent Podcast
1735 W State of Franklin Rd. Ste 5 #165
Johnson City, TN 37604

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 126 - Mimicry Nov 13, 2021

Evolution loves to plagiarize. You might be surprised at just how useful it can be for an organism to copy the signals, sights, sounds, and smells of others. Mimicry is all about making use of miscommunication. In this episode we’ll discuss the astounding diversity of modern mimics, the rare examples of fossil mimics, and the complex and confusing evolution patterns of mimicry.

In the news: Cambrian bryozoans, early tusks, hermit worms, and parthenogenetic condors.

Time markers:
Intro & Announcements: 00:00:00
News: 00:05:00
Main discussion, Part 1: 00:35:30
Main discussion, Part 2: 01:20:30
Patron question: 01:59:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

We're now taking questions for our End of the Year Q&A! Submit your question here: https://forms.gle/Q3jHtLSp5CdFuAuL9

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast

Or make a one-time donation via PayPal: https://tinyurl.com/4c68u4hp

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You can email us at commondescentpodcast(at)gmail.com
Or send us physical mail at:
The Common Descent Podcast
1735 W State of Franklin Rd. Ste 5 #165
Johnson City, TN 37604

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 125 - Orchids Oct 30, 2021

Orchids are among the most diverse and widespread group of plants on Earth today, not to mention one of the most popular among plant enthusiasts. This episode, we discuss what makes orchids so unique and strange, as well as the many mysteries surrounding their evolution and deep history. As with all our plant episodes, Aly is on hand to tell us all about why orchids are so fascinating.

Featuring special guest, Dr. Aly Baumgartner, our favorite paleobotanist!
Follow Aly on Twitter or Instagram @paleolorax

In the news: Permian gliders, social dinosaurs, amber crab, and snake diets.

Time markers:
Intro & Announcements: 00:00:00
News: 00:05:00
Main discussion, Part 1: 00:39:00
Main discussion, Part 2: 01:12:00
Patron question: 01:39:30

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast

Or make a one-time donation via PayPal: https://tinyurl.com/4c68u4hp

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You can email us at commondescentpodcast(at)gmail.com
Or send us physical mail at:
The Common Descent Podcast
1735 W State of Franklin Rd. Ste 5 #165
Johnson City, TN 37604

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Spook-E - Triffids Oct 30, 2021

Welcome ... to Spookulative Evolution.

October is here, and that means it’s time for Spook-E! Each episode throughout this month, we’re choosing a famous monster and discussing how it – or something like it – might evolve under the rules of evolution and natural selection, pulling inspiration from organisms of the real world. This year’s theme: monster plants.

This episode, we face a more modern monster, star of page and screen. Can we invoke natural processes to develop a plant that haunts humans and strikes with a deadly lash? Our creatures to create this time: triffids.

Featuring special guest, Dr. Aly Baumgartner, our favorite paleobotanist!
Follow Aly on Twitter or Instagram @paleolorax

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast

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The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Spook-E - Mandrakes Oct 23, 2021

Welcome ... to Spookulative Evolution.

October is here, and that means it’s time for Spook-E! Each episode throughout this month, we’re choosing a famous monster and discussing how it – or something like it – might evolve under the rules of evolution and natural selection, pulling inspiration from organisms of the real world. This year’s theme: monster plants.

This episode, we evaluate a famous and deadly monster favored by healers and witches. How can we use nature’s toolkit to evolve a baby-shaped root with a fatal scream? Our creatures to create this time: mandrakes.

Featuring special guest, Dr. Aly Baumgartner, our favorite paleobotanist!
Follow Aly on Twitter or Instagram @paleolorax

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast

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The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Episode 124 - Snowball Earth Oct 16, 2021

An Earth covered in ice might sound far-fetched, but there’s reason to think it has actually happened in the past – more than once. In this episode, we examine the Snowball Earth hypothesis and the geologic evidence and climate models that back it up, as well as some of the major lingering questions: Just how snowy is the snowball? How could this start? How could it end? And how did life fare on a frozen planet?

In the news: ancient tardigrades, meat-eating sloths, shark communities, and relict mangroves.

Time markers:
Intro & Announcements: 00:00:00
News: 00:04:30
Main discussion, Part 1: 00:32:30
Main discussion, Part 2: 01:02:00
Patron question: 01:44:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast

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iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Spook-E - Animated Trees Oct 16, 2021

Welcome ... to Spookulative Evolution.

October is here, and that means it’s time for Spook-E! Each episode throughout this month, we’re choosing a famous monster and discussing how it – or something like it – might evolve under the rules of evolution and natural selection, pulling inspiration from organisms of the real world. This year’s theme: monster plants.

This episode, we ponder a familiar favorite of myths, media, and Middle Earth. What evolutionary path might result in a towering woody plant that walks and talks? Our creatures to create this time: animated trees.

Featuring special guest, Dr. Aly Baumgartner, our favorite paleobotanist!
Follow Aly on Twitter or Instagram @paleolorax

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast

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iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Spook-E - People-Eating Plants Oct 09, 2021

Welcome ... to Spookulative Evolution.

October is here, and that means it’s time for Spook-E! Each episode throughout this month, we’re choosing a famous monster and discussing how it – or something like it – might evolve under the rules of evolution and natural selection, pulling inspiration from organisms of the real world. This year’s theme: monster plants.

This episode, we consider a classic category of plants-turned-monsters. How might natural selection produce a predatory plant with a taste for humans? Our creatures to create this time: people-eating plants.

Featuring special guest, Dr. Aly Baumgartner, our favorite paleobotanist!
Follow Aly on Twitter or Instagram @paleolorax

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast

Or make a one-time donation via PayPal: https://tinyurl.com/4c68u4hp

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PodBean: https://commondescentpodcast.podbean.com/
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The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Episode 123 - Spiders Oct 02, 2021

Spiders are among the most diverse, successful, and famous living groups of invertebrates. Today, they’re a worldwide assortment of fascinating predators, and their scarce fossil record provides hints of a history over 300 million years old. In this episode, we discuss the diversity and evolution of spiders, their varied lifestyles, and their most versatile and famous tool, silk.

In the news: snake evolution, giant penguins, early American humans, and spider parents.

Time markers:
Intro & Announcements: 00:00:00
News: 00:05:30
Main discussion, Part 1: 00:35:00
Main discussion, Part 2: 01:12:30
Patron question: 01:53:30

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast

Or make a one-time donation via PayPal: https://tinyurl.com/4c68u4hp

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Follow and Support us on:
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PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 122 - Plate Tectonics Sep 18, 2021

The Earth is in motion beneath our feet. The shifting and grinding of the tectonic plates is responsible for the shape of our planet’s surface and – directly or indirectly – nearly all the activity that happens upon it. Plate tectonics has a deep and fascinating history, both as a force that has shaped the Earth for billions of years and as a surprisingly recent foundational scientific theory.

In the news: shark teeth, Cambrian predators, Carnotaurus skin, and teratorns.

Time markers:
Intro & Announcements: 00:00:00
News: 00:05:30
Main discussion, Part 1: 00:29:30
Main discussion, Part 2: 01:16:30
Patron question: 01:57:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast

Or make a one-time donation via PayPal: https://tinyurl.com/4c68u4hp

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PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 121 - Brains Sep 04, 2021

Nearly all animals have some form of nervous system, and this system is often monitored and regulated by a brain. We humans are particularly proud of our enormous brains, but these organs come in all shapes and sizes across the animal kingdom, past and present. In this episode, we discuss brain diversity, the sometimes roundabout ways we explore brains in the fossil record, and what we’ve come to learn about the evolution of brains.

In the news: turtle embryo, frog-legged leaf beetle, early lizard cousin, and tyrannosaur brains.

Time markers:
Intro & Announcements: 00:00:00
News: 00:06:15
Main discussion, Part 1: 00:34:00
Main discussion, Part 2: 01:12:45
Patron question: 02:05:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast

Or, make a one-time donation via PayPal: https://tinyurl.com/4c68u4hp

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The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 120 – Tyrannosaurs Aug 21, 2021

Ever since T. rex was first identified in 1905, tyrannosaurs have been among the most famous and well-studied dinosaurs of all time. Research, especially in the last few decades, has revealed incredible details of tyrannosaur evolution, lifestyles, and development. This episode, we take a tour through tyrannosaur history, envision what these predators were like in life, and touch on some of the most prominent tyrannosaur controversies, including their notorious popularity.

In the news: venom evolution, mammoth roaming, Jurassic land-croc, and climate change.

Time markers:
Intro & Announcements: 00:00:00
News: 00:07:30
Main discussion, Part 1: 00:45:30
Main discussion, Part 2: 01:24:00
Patron question: 02:44:30

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast

Or, make a one-time donation via PayPal: https://tinyurl.com/4c68u4hp

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The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 119 - India Aug 07, 2021

India is a landmass with an incredible history. Over the past half-billion years, it has spent time with the southern continents, time as an island-on-the-move, and time with the northern continents. Its fossil record is a combination of southern life, northern life, and uniquely Indian life, and its geologic history is not only the story of a traveling subcontinent, but also the origin story of one of Earth’s most impressive mountain ranges.

In the news: baby pterosaurs, vampire bats, early sponges, and snake-y ancient reptiles.

Time markers:
Intro & Announcements: 00:00:00
News: 00:04:30
Main discussion, Part 1: 00:32:00
Main discussion, Part 2: 00:55:30
Patron question: 01:38:30

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast

Find merch at the Common Descent Store! http://zazzle.com/common_descent

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Twitter: https://twitter.com/CommonDescentPC
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iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 118 - Trace Fossils Jul 24, 2021

As organisms live, grow, and move in their environments, they leave all sorts of traces in their surroundings, and these can become fossilized just like body parts can. Trace fossils (ichnofossils) can include evidence of burrowing, walking, feeding, and more. Individual trace fossils are great for understanding the behaviors of ancient organisms, and communities of trace fossils can help us track major changes in ecosystems through time.

In the news: damaged cave bear, shrinking dinosaurs, koala lemurs, and megaripples.

Time markers:
Intro & Announcements: 00:00:00
News: 00:05:30
Main discussion, Part 1: 00:35:30
Main discussion, Part 2: 01:11:30
Patron question: 01:55:00

We're on a new podcast! We're both players on Mysteries of the Mournland, a Level Up: Advanced Fifth Edition actual play horror podcast, set in the world of Eberron.
https://motma5epodcast.podbean.com/

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Find merch at the Common Descent Store! http://zazzle.com/common_descent

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The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 117 - Crabs and Carcinization Jul 10, 2021

What exactly is a “crab” anyway? One answer is that they are among the most diverse and successful living arthropods. Another answer: they are many different groups of crustaceans that have converged on a crabby body plan. In this episode, we discuss the diversity and evolution of “true crabs,” the incredible phenomenon of carcinization that keeps creating crabs, and what it really means to be a “crab.”

In the news: poop beetles, Arctic dinosaurs, Dragon Man, and an ancient shark attack.

Time markers:
Intro & Announcements: 00:00:00
News: 00:04:30
Main discussion, Part 1: 00:38:00
Main discussion, Part 2: 01:06:00
Patron question: 01:46:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Find merch at the Common Descent Store! http://zazzle.com/common_descent

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
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PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 116 - Ichthyosaurs Jun 26, 2021

The history of evolution has seen many land animals move to the sea, but few have done it with such success and specialization as ichthyosaurs. These Mesozoic marine reptiles were the first group of tetrapods to truly dominate the marine realm, and they evolved some of the most extreme adaptations – and largest bodies – of any ocean-dwelling tetrapods. This episode, we discuss how they got started, what they did, where they went, and why they’re so incredibly famous.

In the news: giant crocs, giant rhinos, young tyrannosaurs, and dwarf elephants.

Time markers:
Intro & Announcements: 00:00:00
News: 00:04:00
Main discussion, Part 1: 00:32:00
Main discussion, Part 2: 01:15:00
Patron question: 01:59:30

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Find merch at the Common Descent Store! http://zazzle.com/common_descent

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
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YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw
PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Silver Screen Science - Anaconda (1997) Jun 24, 2021

This June, by popular demand, we’re doing a Silver Screen Science double feature focusing on our two favorite reptiles: crocs and snakes. One croc movie, one snake movie, both quintessential creature features of the 90s.

This episode, it’s snake time: Anaconda (1997)

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The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Silver Screen Science - Lake Placid (1999) Jun 17, 2021

This June, by popular demand, we’re doing a Silver Screen Science double feature focusing on our favorite reptiles: crocs and snakes! One croc movie, one snake movie, both quintessential creature features of the 90s.

This episode, crocs take center stage: Lake Placid (1999)

Next time … Anaconda.

The Common Descent Store is open! Get merch! http://zazzle.com/common_descent

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The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Episode 115 - Biomes Jun 12, 2021

All over the Earth, there are biological communities that differ depending on the local climate and landscape. These are biomes, and biologists love to map them to unravel patterns of ecosystem distribution. But biomes also change over time as climates and landscapes shift. In this episode, our favorite paleobotanist, Dr. Aly Baumgartner, joins us to discuss how we identify biomes in the past and present, how they’ve changed over time, and what it means for a new biome to arise … or for an old one to go extinct.

In the news: whale diets, moa poop, shark extinction, and flower seeds.

Follow Aly on Twitter or Instagram @paleolorax

Time markers:
Intro & Announcements: 00:00:00
News: 00:05:00
Main discussion, Part 1: 00:33:00
Main discussion, Part 2: 01:11:30
Patron question: 01:46:30

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Find merch at the Common Descent Store! http://zazzle.com/common_descent

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
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PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 114 - Polar Life May 29, 2021

Far to the north and far to the south, conditions on Earth get weird. Cold climates and periods of perpetual night or day create some of the most unique habitats on the planet. In this episode, we look at what makes the polar regions so strange, how they’ve changed over time, what it takes for life to survive there, and what fossils tell us about what lived there in the past.

In the news: gut microbiomes, chewed Neanderthals, ancient symbiosis, and very old turtles.

Time markers:
Intro & Announcements: 00:00:00
News: 00:04:30
Main discussion, Part 1: 00:32:30
Main discussion, Part 2: 01:13:30
Patron question: 01:44:30

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Find merch at the Common Descent Store! http://zazzle.com/common_descent

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Patreon: https://www.patreon.com/commondescentpodcast
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iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 113 - Paleoclimate May 15, 2021

The geologic record of Earth is an archive of data on the causes and effects of changing climates. As climate changes, it impacts everything from plants and animals to rocks and rivers. The study of ancient climates is paleoclimatology, and it’s important not only for our understanding of climate in the past, but also for teasing out what’s happening with our climate today and what we can expect for the future.

In the news: tyrannosaur group, a chomped squid, horned crocs, and night dinosaurs.

This episode, we’re joined by Dr. Rachel Lupien!
Find Rachel at rachellupien.com or follow her at @loopdlupien on Twitter.

Time markers:
Intro & Announcements: 00:00:00
News: 00:04:00
Main discussion, Part 1: 00:42:00
Main discussion, Part 2: 01:26:00
Patron question: 02:11:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Find merch at the Common Descent Store! http://zazzle.com/common_descent

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iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 112 - Caves May 01, 2021

Subterranean passages and chambers within the Earth form eerie and incredible environments that are home to unique ecosystems of bizarre creatures and which serve as some of the most invaluable sources of fossils in the world. This episode, we discuss how caves form, what ecosystems dwell within them, and why they’re so darn important for paleontology.

In the news: pterosaur thumbs, scimitar-cat diets, counting T. rex, and ancient soil DNA.

Time markers:
Intro & Announcements: 00:00:00
News: 00:03:30
Main discussion, Part 1: 00:35:00
Main discussion, Part 2: 01:16:00
Patron question: 01:55:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Find merch at the Common Descent Store! http://zazzle.com/common_descent

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Patreon: https://www.patreon.com/commondescentpodcast
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iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 111 - Eusociality Apr 17, 2021

There isn’t much on Earth quite like an ant colony or a beehive. Lots of animals are social, but relatively few are eusocial. It’s a bizarre lifestyle, living in large multi-generational colonies with lots of members who don’t reproduce but instead dedicate their lives to protecting and nourishing the offspring of the few reproducers. In this episode, we discuss the many questions surrounding this phenomenon, including how many times this trait has evolved, why it’s apparently so beneficial, and exactly how natural selection could even produce such a strange lifestyle.

In the news: venom evolution, pointy things, early rainforests, and bone origins.

Time markers:
Intro & Announcements: 00:00:00
News: 00:05:00
Main discussion, Part 1: 00:39:00
Main discussion, Part 2: 01:15:00
Patron question: 02:02:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Find merch at the Common Descent Store! http://zazzle.com/common_descent

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PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Silver Screen Science – Godzilla vs. Kong (2021) Apr 11, 2021

We’ve talked a lot about Godzilla and King Kong in previous Silver Screen Science episodes, and now there’s a new movie with both of them in it, so we’re going to talk about that! More monster fights, more science, more fun.

This episode, the all-star monsters are back: Godzilla vs. Kong (2021)
We also briefly discuss the last time these monsters met: King Kong vs. Godzilla (1962)

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The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Episode 110 - Mazon Creek Fossil Beds Apr 03, 2021

Go searching in the right spots in Illinois and you’re liable to find a hard chunk of ironstone with a gorgeous fossil inside. The Mazon Creek Fossil Beds represent some of the best Carboniferous fossils in the world, yielding exceptionally preserved plants and animals from a tropical river delta over 300 million years old. This episode, we discuss the history, the geology, and some of the most famously bizarre creatures of Mazon Creek.

In the news: a “winged” shark, digging ankylosaurs, the oldest cephalopods, and a fly full of pollen.

Time markers:
Intro & Announcements: 00:00:00
News: 00:04:30
Main discussion, Part 1: 00:33:30
Main discussion, Part 2: 00:56:00
Patron question: 01:22:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Find merch at the Common Descent Store! http://zazzle.com/common_descent

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iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 109 - Hyenas Mar 20, 2021

Despite their unfortunate reputation, hyenas are really impressive. Modern and fossil, they’re a diverse group with a variety of dietary and social habits, and they are the quintessential example of bone-crushing specialists. In this episode, we discuss what makes hyenas unique and interesting, and we take a look at their surprisingly varied fossil history.

In the news: lamprey larvae, octopus diets, nesting dinosaurs, and tyrannosaur bites.

Time markers:
Intro & Announcements: 00:00:00
News: 00:03:30
Main discussion, Part 1: 00:34:30
Main discussion, Part 2: 01:11:30
Patron question: 01:49:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Find merch at the Common Descent Store! http://zazzle.com/common_descent

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PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 108 - Penguins Mar 06, 2021

Penguins aren’t the only flightless birds, and they aren’t the only diving birds, but they sure are good at doing both! In this episode, we discuss modern penguins’ unique suite of adaptations that allow them to spend so much of their lives in the water, and then we address some of the most pressing questions about their past: How did they get their start? What drove their evolution? And why were some of them so disconcertingly large?

In the news: giant coelacanths, really old DNA, fossil vampire squid, and dinosaur ecology.

Time markers:
Intro & Announcements: 00:00:00
News: 00:04:30
Main discussion, Part 1: 00:42:00
Main discussion, Part 2: 01:13:30
Patron question: 01:49:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Find merch at the Common Descent Store! http://zazzle.com/common_descent

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YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw
PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 107 – Tusks Feb 20, 2021

Taking teeth to the extreme! Tusks have evolved numerous times, particularly in mammals, and they’ve come in a striking array of shapes and sizes for a variety of uses. From the monstrously huge ivory tusks of mammoths to the modest yet effective tusks of fanged deer to the bizarre and perplexing tusks of babirusas and narwhals, in this episode we discuss trends, drivers, and mysteries in the evolution of tusks.

In the news: razor-toothed mosasaurs, walk the dinosaur, sidewinder skin, and really old giant sloths.

Time markers:
Intro & Announcements: 00:00:00
News: 00:03:30
Main discussion, Part 1: 00:38:00
Main discussion, Part 2: 01:15:30
Patron question: 01:54:30

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Find merch at the Common Descent Store! http://zazzle.com/common_descent

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast
Instagram: @commondescentpodcast
PodBean: https://commondescentpodcast.podbean.com/
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 106 - Franz Nopcsa Feb 06, 2021

Happy Darwin Day!

Baron Franz Nopcsa was a paleontologist around the start of the 20th Century, remembered today for his innovative fossil research, his (in)famous personality, and his fantastic adventures across Eastern Europe. In this episode, we’ll discuss how this aristocrat became a paleontologist and how he contributed to our modern understanding of dinosaurs, and we’ll share some of the incredible and bizarre stories that surround him.

In the news: Parasaurolophus crests, sand striker burrows, dogs in Siberia, and life on Pinatubo.

Time markers:
Intro & Announcements: 00:00:00
News: 00:04:30
Main discussion, Part 1: 00:42:00
Main discussion, Part 2: 01:12:00
Patron question: 01:46:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Find merch at the Common Descent Store! http://zazzle.com/common_descent

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast
Instagram: @commondescentpodcast
PodBean: https://commondescentpodcast.podbean.com/
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 105 - Carnivorous Plants Jan 23, 2021

A new tradition begins! Get ready for more plants with our friend Dr. Aly Baumgartner!

Most plants are content to sit still and take in sunlight and soil nutrients, but when conditions are tough, some plants get hungry! The habit of devouring small animals has evolved in plants several times. In this episode, we discuss what counts as carnivory in plants, why they do it, the various methods plants use to murder their meals, and what little we know about the evolutionary history of this behavior.

Time markers:
Intro & Announcements: 00:00:00
News: 00:03:30
Main discussion, Part 1: 00:41:30
Main discussion, Part 2: 01:19:00
Patron question: 02:03:30

Follow Aly on Twitter @kyrietree or Instagram @paleolorax

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Find merch at the Common Descent Store! http://zazzle.com/common_descent

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast
Instagram: @commondescentpodcast
PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 104 - Pinnipeds Jan 09, 2021

Seals, sea lions, and walruses (oh my!) are widespread, successful, and invariably charming. In this episode, we take a look at how they’re adapted for their aquatic lifestyles and how they might have gotten that way. We’ll explore some of the unanswered questions about their origins and evolution, and we’ll take a tour through their diverse but spotty fossil record.

Time markers:
Intro & Announcements: 00:00:00
News: 00:04:00
Main discussion, Part 1: 00:29:00
Main discussion, Part 2: 00:57:00
Patron question: 01:32:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Find merch at the Common Descent Store! http://zazzle.com/common_descent

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast
Instagram: @commondescentpodcast
PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

End of the Year Q&A 2020 Dec 30, 2020

Happy New Year!

A huge thanks to everyone who sent in questions for this year’s Q&A – we got more than we could even answer! – and to everyone who has supported the podcast this year by listening, sharing, donating, and reaching out to us.

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Find merch at the Common Descent Store! http://zazzle.com/common_descent

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast
Instagram: @commondescentpodcast
PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Episode 103 – The Paleocene-Eocene Thermal Maximum Dec 26, 2020

The PETM has been called the largest natural climate change event of the Cenozoic Era. It marks the transition from the ecosystems of the Paleocene to the more familiar world of the Eocene and is thus an important step in making the world the way we know it today. But maybe most importantly, it is a dramatic case study in what happens when a huge amount of Carbon injected into the atmosphere triggers rapid warming of global climate … you know, in case anyone needs to know about that.

In the news: pterosaur cousins, oldest pythons, burrowed dinosaurs, and hibernating hominins.

Time markers:
Intro & Announcements: 00:00:00
News: 00:04:30
Main discussion, Part 1: 00:32:30
Main discussion, Part 2: 01:03:00
Patron question: 01:36:30

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Find merch at the Common Descent Store! http://zazzle.com/common_descent

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast
Instagram: @commondescentpodcast
PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 102 - Parasites Dec 12, 2020

The word parasite doesn’t typically invoke a lot of happy thoughts for us humans, but as far as life on Earth is concerned, parasitism is a path to success. As we discuss in this episode, an incredible diversity of organisms, past and present, have developed an equally incredible diversity of strategies for stealing, siphoning, and exploiting resources from other organisms.

In the news: surprise bird beak, alligator tails, flightless birds, and chemical re-assessment.

Time markers:
Intro & Announcements: 00:00:00
News: 00:05:00
Main discussion, Part 1: 00:39:30
Main discussion, Part 2: 01:21:00
Patron question: 01:55:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Submit your questions for our End of the Year Q&A using this form, closing December 15th! https://forms.gle/2BDWts2RaKzRo3hL8

Find merch at the Common Descent Store! http://zazzle.com/common_descent

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast
Instagram: @commondescentpodcast
PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 101 - Sauropods Nov 28, 2020

Is there a group of dinosaurs more iconic than sauropods? Famous for their ridiculously long necks, their global success, their astounding diversity, and of course for their unparalleled size, sauropods have fascinated and puzzled people for centuries. In this episode, we’ll explore what makes sauropods and their ancestors special, and we’ll talk a bit about how they functioned at truly colossal scales.

In the news: strange-jawed sharks, ancient walruses, dinosaur demise, and the oldest blindsnakes.

Time markers:
Intro & Announcements: 00:00:00
News: 00:07:00
Main discussion, Part 1: 00:38:30
Main discussion, Part 2: 01:04:30
Patron question: 01:42:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Submit your questions for our End of the Year Q&A using this form: https://forms.gle/2BDWts2RaKzRo3hL8

Find merch at the Common Descent Store! http://zazzle.com/common_descent

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast
Instagram: @commondescentpodcast
PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

100 Episodes: A Look Back Nov 22, 2020

We’ve released 100 episodes of the podcast! Plus, more than 50 side episodes, a handful of YouTube videos, some live shows … it’s been quite a journey. In this episode, we take some time to look back over our experience, to discuss some of our favorite aspects of the podcast, and above all, to thank our listeners.

Thank you. To everyone who listens to the podcast; everyone who supports us on Patreon; everyone who sends us requests, questions, comments, and feedback; everyone who follows us on social media or leaves a review on iTunes; everyone who comes to see us at DragonCon; everyone who tells their friends about us. This podcast wouldn’t exist without all of you, and we are so, so glad it exists.

Here’s to another 100 episodes.

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Submit your questions for our End of the Year Q&A using this form: https://forms.gle/2BDWts2RaKzRo3hL8

Find merch at the Common Descent Store! http://zazzle.com/common_descent

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast
Instagram: @commondescentpodcast
PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Episode 100 - The Origin of Life Nov 14, 2020

One hundred episodes is kind of a big deal, so we figured we’d pick a big deal kind of topic, and it doesn’t get much bigger than this.

As far as we can tell, all life on Earth is descended from a common ancestry – at some point, at least once, life originated on Earth. But when, where, and how? These are open questions that have been subject to lots of scientific and philosophical discussions and experiments. In this episode, we’ll touch on some of the biggest questions: What even is life? How old is life on Earth? What steps led to the first living things? Is Earth the only place this has happened?

In the news: dino bone disease, amphibian chameleons, ancient social mammals, and pterosaur diets.

Time markers:
Intro & Announcements: 00:00:00
News: 00:08:00
Main discussion, Part 1: 00:38:00
Main discussion, Part 2: 01:30:00
Patron questions: 02:26:30

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Submit your questions for our End of the Year Q&A using this form: https://forms.gle/2BDWts2RaKzRo3hL8

Find merch at the Common Descent Store! http://zazzle.com/common_descent

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast
Instagram: @commondescentpodcast
PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 99 - Evolution of Insects Oct 31, 2020

Insects must be among the most impressive animals in Earth history. For hundreds of millions of years, they have been some of the most significant animals on land in terms of their abundance, diversity, and ecological impact. Their deep story is marked by evolutionary innovations that weren’t just major events for insects, but major events for the entire planet. This episode, we barely scratch the surface of the insect story.

In the news: a new pterosaur, big Antarctic birds, gliding dinosaurs, and a dinosaur cloaca.

Time markers:
Intro & Announcements: 00:00:00
News: 00:07:30
Main discussion, Part 1: 00:35:00
Main discussion, Part 2: 01:08:00
Patron question: 01:56:30

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Find merch at the Common Descent Store! http://zazzle.com/common_descent
Featuring art by Rob Soto! https://www.rob-soto.com/

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast
Instagram: @commondescentpodcast
PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Spook-E - The Sirens Oct 31, 2020

Welcome ... to Spookulative Evolution.

It’s October once again and time for Spook-E! Each episode throughout this month, we’re choosing a monster and discussing how it – or something like – might evolve biologically, pulling inspiration from critters of the real world. This month’s theme: sea monsters.

This episode, we turn our attention to the creatures whose enticing songs sound over the sea. How can we naturally evolve a group of humanoid(ish) island-dwellers whose voices lure in victims? Our creatures to create this time: the Sirens.

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Find merch at the Common Descent Store! http://zazzle.com/common_descent

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast
Instagram: @commondescentpodcast
PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Spook-E - The Leviathan Oct 24, 2020

Welcome ... to Spookulative Evolution.

It’s October once again and time for Spook-E! Each episode throughout this month, we’re choosing a monster and discussing how it – or something like – might evolve biologically, pulling inspiration from critters of the real world. This month’s theme: sea monsters.

This episode, we explore a monster whose name is synonymous with immensity and might. What biological history could explain a dangerous sea giant worthy of divine association? Our creature to create this time: the Leviathan.

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Find merch at the Common Descent Store! http://zazzle.com/common_descent

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast
Instagram: @commondescentpodcast
PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Episode 98 - Species and Speciation Oct 17, 2020

When we study life, past or present, we talk a lot about species, their evolution, their diversity, their extinction, and more. But we don’t often slow down to discuss what we really mean by that. What is a species? How and where do new species arise? It turns out this topic is much more complicated – and controversial! – than it may seem. In this episode, we’ll touch on the basics and discuss why scientists get so worked up about species and speciation.

In the news: a glass-ified brain, a Cretaceous croc, a long walk, and a sensitive dinosaur.

Time markers:
Intro & Announcements: 00:00:00
News: 00:05:30
Main discussion, Part 1: 00:36:30
Main discussion, Part 2: 01:13:00
Patron question: 01:57:30

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

We were featured on Pallet University, talking about science and Pokémon! https://www.youtube.com/watch?v=noKhRDVa03o

Find merch at the Common Descent Store! http://zazzle.com/common_descent
Featuring art by Rob Soto! https://www.rob-soto.com/

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast
Instagram: @commondescentpodcast
PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Spook-E - Sea Serpents Oct 17, 2020

Welcome ... to Spookulative Evolution.

It’s October once again and time for Spook-E! Each episode throughout this month, we’re choosing a monster and discussing how it – or something like – might evolve biologically, pulling inspiration from critters of the real world. This month’s theme: sea monsters.

This episode, we tackle a particularly prevalent body shape among sea monsters. How might evolution produce an ocean full of enormous slithery beasts fit for sailors’ nightmares? Our creatures to create this time: sea serpents.

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Find merch at the Common Descent Store! http://zazzle.com/common_descent

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast
Instagram: @commondescentpodcast
PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Spook-E - The Kraken Oct 10, 2020

Welcome ... to Spookulative Evolution.

It’s October once again and time for Spook-E! Each episode throughout this month, we’re choosing a monster and discussing how it – or something like – might evolve biologically, pulling inspiration from critters of the real world. This month’s theme: sea monsters.

This episode, we discuss one of the most famous fictional sea creatures of all. How might natural selection give us a ship-wrecking cephalopod of titanic proportions? Our creature to create this time: the Kraken.

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Find merch at the Common Descent Store! http://zazzle.com/common_descent

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast
Instagram: @commondescentpodcast
PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Episode 97 - Venom and Poison Oct 03, 2020

Okay, that’s not a great title. More accurately, we’re discussing toxins, the substances that organisms produce for chemical defense or attack against each other. Toxins are found in practically all living things, they function as part of immune systems, poisonous defenses, and predatory venom, and they have all sorts of amazing effects from discomfort to death. In this episode, we’ll touch on who has them, what they do, and what we know about the long, complex evolutionary history of venom and biological poison.

In the news: Spinosaurus teeth, an overlooked extinction, bird beaks, and Neanderthal DNA.

Time markers:
Intro & Announcements: 00:00:00
News: 00:04:00
Main discussion, Part 1: 00:33:30
Main discussion, Part 2: 01:07:30
Patron question: 01:47:30

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Find merch at the Common Descent Store! http://zazzle.com/common_descent
Featuring art by Rob Soto! https://www.rob-soto.com/

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast
Instagram: @commondescentpodcast
PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 96 - Marsupials Sep 19, 2020

Marsupials are like alternate-reality mammals. Everything about them, from their skeletons to their reproductive strategies, is just a bit strange – from the perspective of us placental mammals, that is! But you can’t argue with results, and marsupials include some of the most fascinating mammals of the past and present. In this episode, we track the long evolutionary journey that gave the modern world its kangaroos, koalas, possums, opossums, and more.

In the news: air-breathing sea scorpions, fish bone evolution, mastodon migrations, and burrowing dinosaurs.

Time markers:
Intro & Announcements: 00:00:00
News: 00:04:30
Main discussion, Part 1: 00:37:30
Main discussion, Part 2: 01:12:00
Patron question: 01:59:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

If you missed our DragonCon presentations, find them here:
https://www.youtube.com/watch?v=hDlI6lJgRsU
https://www.youtube.com/watch?v=nC-oSa9OMm8

New merch at the Common Descent Store! http://zazzle.com/common_descent
Featuring art by Rob Soto! https://www.rob-soto.com/

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast
Instagram: @commondescentpodcast
PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 95 – The Carboniferous Rainforest Collapse Sep 05, 2020

This episode marks the end of our extinction series, but on the bright side, Aly’s here!

Most of the extinction events we discuss are very animal-focused, but the end of the Carboniferous Period featured one of history’s worst plant extinctions. This event wiped out the famous ecosystems of the Carboniferous, reshuffled ecosystems, and ushered in a more familiar world of plants. In this episode, as usual, we discuss what happened, why, and how it impacted the world.

In the news: a croc-bitten sloth, a dinosaur embryo, dinosaur dimorphism, and ancient hibernation.

Time markers:
Intro & Announcements: 00:00:00
News: 00:09:00
Main discussion, Part 1: 00:46:30
Main discussion, Part 2: 01:21:00
Patron question: 01:55:30

Follow Aly on Twitter (@kyrietree) or Instagram (@paleolorax)

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

New merch at the Common Descent Store! http://zazzle.com/common_descent
Featuring art by Rob Soto! https://www.rob-soto.com/

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast
Instagram: @commondescentpodcast
PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 94 - Dogs Aug 22, 2020

Dogs are among the most diverse and successful mammalian predators on the planet, from widespread wild predators like wolves to the most iconic domestic species of all time in our own homes. This episode, we look at what makes dogs unique, where they got their start, what their fossil history has looked like, and finally how one species ended up being among the most widespread species on Earth.

In the news: hell ants, weird reptiles, dinosaur cancer, and “super-crocs”

Time markers:
Intro & Announcements: 00:00:00
News: 00:05:30
Main discussion, Part 1: 00:37:00
Main discussion, Part 2: 01:05:30
Patron question: 01:51:30

Listen to our guest appearance on Ask a Scientist! Thanks to Victoria for inviting us! https://askascientistpod.com/

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

New merch at the Common Descent Store! http://zazzle.com/common_descent
Featuring art by Rob Soto! https://www.rob-soto.com/

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast
Instagram: @commondescentpodcast
PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 93 - Cats Aug 08, 2020

Cats are among the most diverse and successful mammalian predators on the planet, from lions on the savanna to ocelots in the jungle to domestic cats in homes and homepages worldwide. This episode, we look at what makes cats unique, where they got their start, what their fossil history has looked like, and finally how one species ended up being among the most widespread species on Earth.

In the news: African and American crocs, ancient owls, Fiji pigeons, and prey-breaking snakes.

Time markers:
Intro & Announcements: 00:00:00
News: 00:04:00
Main discussion, Part 1: 00:32:00
Main discussion, Part 2: 01:03:30
Patron question: 01:46:30

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

New merch at the Common Descent Store! http://zazzle.com/common_descent
Featuring art by Rob Soto! https://www.rob-soto.com/

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast
Instagram: @commondescentpodcast
PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 92 - Eggs Jul 25, 2020

Everybody starts somewhere, and most animals start inside an egg! Eggs are about as old and as varied as animal life itself, and when they show up in the fossil record, they can be very telling. In this episode we discuss what goes inside an egg, what makes them so special and useful, and what we can learn from their patchy fossil record.

In the news: early archosaurs, more on Dilophosaurus, Microraptor feathers, and a large dolphin.

Time markers:
Intro & Announcements: 00:00:00
News: 00:04:30
Main discussion, Part 1: 00:32:00
Main discussion, Part 2: 01:13:30
Patron question: 01:58:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

New merch at the Common Descent Store! http://zazzle.com/common_descent
Featuring art by Rob Soto! https://www.rob-soto.com/

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast
Instagram: @commondescentpodcast
PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 91 - Frogs Jul 11, 2020

Roughly nine out of ten living amphibian species are frogs. They’re incredibly diverse and successful, and they have been since the Jurassic Period. But the origins of frogs and their fellow modern amphibians is shrouded in mystery. In this episode, we discuss what makes frogs special, what their fossil record looks like, and what paleontologists know and don’t know about the earliest evolution of modern amphibians.

In the news: colorful insects, salamander evolution, saber-toothed marsupials, and venomous caecilians?

Time markers:
Intro & Announcements: 00:00:00
News: 00:04:30
Main discussion, Part 1: 00:36:00
Main discussion, Part 2: 01:11:00
Patron question: 01:41:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

New merch at the Common Descent Store! http://zazzle.com/common_descent
Featuring art by Rob Soto! https://www.rob-soto.com/

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast
Instagram: @commondescentpodcast
PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 90 - "Living Fossils" Jun 27, 2020

"Living fossils" aren't really a thing, not the way they're typically talked about anyway, and the term can be a source of debate among scientists and science communicators. In this episode, we talk about how this term is used and why some scientists defend it while others (including us!) aren't fans.

In the news: horned gophers, dinosaur eggs, giant eggs, and croc tracks.

Time markers:
Intro & Announcements: 00:00:00
News: 00:05:00
Main discussion, Part 1: 00:37:30
Main discussion, Part 2: 01:16:00
Patron question: 01:54:00

In light of current events, we invite you to explore these links to educate yourself, as we have been doing, about the subject of racial injustice:
Smithsonian NMAAHC - Talking About Race
https://nmaahc.si.edu/learn/talking-about-race
TimeScavengers - Black Lives Matter
https://timescavengers.blog/2020/06/01/black-lives-matter/
Ally Anti-Racism Resources
https://docs.google.com/document/d/1MjUESaOh2H-846KKiHUWHDUIhi3PlaFts-rqy9EQ43g/edit#
We’ve also made a donation to the NAACP Legal Defense & Education Fund:
https://www.naacpldf.org/

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

New merch at the Common Descent Store! http://zazzle.com/common_descent
Featuring art by Rob Soto! https://www.rob-soto.com/

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast
Instagram: @commondescentpodcast
PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 89 - The Burgess Shale Jun 13, 2020

In the Canadian Rockies of British Columbia sits one of the most important, well-studied, and scientifically influential fossil sites in the world. The Burgess Shale not only provides us a glimpse into the tail end of the Cambrian Explosion, and not only yields tens of thousands of fossil specimens, but also includes some of the most exceptional fossil preservation of any fossil locality anywhere. This episode, we’ll dive into how it got that way, and what it has to tell us about some of Earth's earliest animal communities.

In the news: baby sharks, hungry dinosaurs, a pregnant ichthyosaur, and one dino’s last meal.

Time markers:
Intro & Announcements: 00:00:00
News: 00:06:30
Main discussion, Part 1: 00:34:00
Main discussion, Part 2: 01:00:00
Patron question: 01:37:00

In light of current events, we invite you to explore these links to educate yourself, as we have been doing, about the subject of racial injustice:
Smithsonian NMAAHC - Talking About Race
https://nmaahc.si.edu/learn/talking-about-race
TimeScavengers - Black Lives Matter
https://timescavengers.blog/2020/06/01/black-lives-matter/
Ally Anti-Racism Resources
https://docs.google.com/document/d/1MjUESaOh2H-846KKiHUWHDUIhi3PlaFts-rqy9EQ43g/edit#
We’ve also made a donation to the NAACP Legal Defense & Education Fund:
https://www.naacpldf.org/

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

New merch at the Common Descent Store! http://zazzle.com/common_descent
Featuring art by Rob Soto! https://www.rob-soto.com/

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast
Instagram: @commondescentpodcast
PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Live Chat - Conservation Paleontology Jun 04, 2020

In this series, we invite scientists to live Q&As on YouTube, where we discuss topics we’ve covered before on the podcast.

This episode, we discussed Conservation Paleontology (Episode 8) with Dr. Rachel Short and Dr. Jeff Martin of Texas A&M University.

You can find the video recording on our YouTube channel: https://www.youtube.com/playlist?list=PLfdiT8Klm_YO04cvDqZ-_O3Iiq0J5GZJz

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

New merch at the Common Descent Store! http://zazzle.com/common_descent
Featuring art by Rob Soto! https://www.rob-soto.com/

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast
Instagram: @commondescentpodcast
PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Live Chat - Paleopathology Jun 02, 2020

In this series, we invite scientists to live Q&As on YouTube, where we discuss topics we’ve covered before on the podcast.

This episode, we discussed Paleopathology (Episode 84) with Laura Emmert of the Gray Fossil Site.

You can also watch the video recording of this Live Chat on our YouTube channel: https://www.youtube.com/playlist?list=PLfdiT8Klm_YO04cvDqZ-_O3Iiq0J5GZJz

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

New merch at the Common Descent Store! http://zazzle.com/common_descent
Featuring art by Rob Soto! https://www.rob-soto.com/

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast
Instagram: @commondescentpodcast
PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Episode 88 - Evolution of Teeth May 30, 2020

Start exploring vertebrate evolution and paleontology, and it won’t be long before you end up on the subject of teeth. These handy structures are enormously significant not only for the history of life, but in the study of it as well. In this episode we discuss what makes a tooth a tooth, how teeth came to be, and we muse at length over the incredible diversity and scientific usefulness of teeth.

In the news: dinosaur walking, gharial males and females, hurricane-induced evolution, and humans in Australia.

Time markers:
Intro & Announcements: 00:00:00
News: 00:05:00
Main discussion, Part 1: 00:35:30
Main discussion, Part 2: 01:10:00
Patron question: 01:56:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

New merch at the Common Descent Store! http://zazzle.com/common_descent
Featuring art by Rob Soto! https://www.rob-soto.com/

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast
Instagram: @commondescentpodcast
PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Live Chat - Turtles May 19, 2020

In this series, we invite scientists to live Q&As on YouTube, where we discuss topics we’ve covered before on the podcast.

This episode, we discussed Turtles with Dr. Steven Jasinski of the State Museum of Pennsylvania. You can find Steven on Twitter at @StevenJasinski.

You can also watch the video recording of this Live Chat on our YouTube channel: https://www.youtube.com/playlist?list=PLfdiT8Klm_YO04cvDqZ-_O3Iiq0J5GZJz

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

New merch at the Common Descent Store! http://zazzle.com/common_descent
Featuring art by Rob Soto! https://www.rob-soto.com/

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast
Instagram: @commondescentpodcast
PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Episode 87 - Ceratopsians, the Horned Dinosaurs May 16, 2020

From massive Triceratops to tiny Psittacosaurus, few dinosaurs are as famous, charismatic, or commonly preserved as ceratopsians. In this episode, we’ll follow this group’s evolutionary journey from little bipeds to horned behemoths and discuss some of the biggest scientific questions about their history, their identification, and of course their magnificently adorned noggins.

In the news: the Tully monster, very strange mammals, dinosaur hunting habits, and the tail of Spinosaurus.

Please pardon our audio issues in this episode.

Time markers:
Intro & Announcements: 00:00:00
News: 00:06:00
Main discussion, Part 1: 00:42:30
Main discussion, Part 2: 01:17:00
Patron question: 01:51:30

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

New merch at the Common Descent Store! http://zazzle.com/common_descent
Featuring art by Rob Soto! https://www.rob-soto.com/

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast
Instagram: @commondescentpodcast
PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Live Chat - Ancient DNA May 12, 2020

In this series, we invite scientists to live Q&As on YouTube, where we discuss topics we’ve covered before on the podcast.

This episode, we discussed Ancient DNA with Dr. Leigha Lynch of Washington University. You can find Leigha on Twitter at @PantheraLeigha.
You can also watch the video recording of this Live Chat on our YouTube channel: https://www.youtube.com/playlist?list=PLfdiT8Klm_YO04cvDqZ-_O3Iiq0J5GZJz

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

New merch at the Common Descent Store! http://zazzle.com/common_descent
Featuring art by Rob Soto! https://www.rob-soto.com/

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast
Instagram: @commondescentpodcast
PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Episode 86 - New Zealand May 02, 2020

In the South Pacific Ocean, there is a family of islands that have been isolated since the Cretaceous Period. New Zealand – past and present – has been home to some of the most unique and fascinating ecosystems on the planet, from its reptiles to its birds to its plants. This episode, we visit New Zealand and take a trip through the fossil and geology history that made it the wonderful place it is today.

In the news: lizard birth, Cretaceous shark extinction, traveling monkeys, and marine croc ears.

Time markers:
Intro & Announcements: 00:00:00
News: 00:08:30
Main discussion, Part 1: 00:35:00
Main discussion, Part 2: 01:02:30
Patron question: 01:38:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

New merch at the Common Descent Store! http://zazzle.com/common_descent
Featuring art by Rob Soto! https://www.rob-soto.com/

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast
Instagram: @commondescentpodcast
PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 85 – The Ordovician Mass Extinction Apr 18, 2020

We’ve discussed mass extinctions quite a bit on this podcast, and indeed we’ve devoted episode to four out of the famous “Big Five” that shaped life on Earth. This episode, we’re completing the set with the Ordovician mass extinction, the earliest of the five. As usual, we’ll explore what happened, who it happened to, why it happened, and how it left its mark on life on Earth.

In the news: ocean crocs, early archosaurs, ancient humans, and post-extinction lakes.

Time markers:
Intro & Announcements: 00:00:00
News: 00:05:00
Main discussion, Part 1: 00:30:30
Main discussion, Part 2: 01:01:00
Patron question: 01:46:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

The Common Descent Store is open! Get merch! http://zazzle.com/common_descent

Follow and Support us on:
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The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Silver Screen Science - Animals of the James Bond Franchise Apr 15, 2020

There’s a pandemic on, and we and many of our listeners are spending lots of time at home. On the bright side, it’s a good opportunity to watch movies and record Silver Screen Science! So, we’re putting together some new episodes, to keep you – and ourselves – entertained.

This episode, we share some thoughts from our long and animal-filled journey through the James Bond films.

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The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Silver Screen Science - Godzilla (1998) Apr 07, 2020

There’s a pandemic on, and we and many of our listeners are spending lots of time at home. On the bright side, it’s a good opportunity to watch movies and record Silver Screen Science! So, we’re putting together some new episodes, to keep you – and ourselves – entertained.

This episode, we revisit the King of Monsters: Godzilla (1998)

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The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Episode 84 - Paleopathology Apr 04, 2020

Life ain’t always easy. Injury and disease are a persistent threat for life of all sorts, and that’s been true for as long as there has been life. Fortunately for us, these threats can leave evidence in fossils, teaching us about the lives, struggles, and sometimes deaths of ancient organisms. The study of this evidence is called paleopathology, and in this episode, our friend Laura will explain the ins and outs of the field and share with us some of her favorite examples.

In the news: ancient hands, old snakes, the earliest animals, and a new dinosaur.

Time markers:
Intro & Announcements: 00:00:00
News: 00:05:00
Main discussion, Part 1: 00:41:00
Main discussion, Part 2: 01:17:00
Patron question: 02:07:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

The Common Descent Store is open! Get merch! http://zazzle.com/common_descent

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YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Silver Screen Science - Evolution (2001) Mar 31, 2020

There’s a pandemic on, and we and many of our listeners are spending lots of time at home. On the bright side, it’s a good opportunity to watch movies and record Silver Screen Science! So, we’re putting together some new episodes, to keep you – and ourselves – entertained.

This episode, ca-caw ca-caw tookie tookie: Evolution (2001)

The Common Descent Store is open! Get merch! http://zazzle.com/common_descent

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The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Patron Mini-Episode Compilation Mar 29, 2020

One of the rewards we offer to our highest-level Patrons is a special mini-episode on an animal or group of their choosing. We’ve done five so far, and we’ve put them together into this compilation so you can all now enjoy them!

Special thanks to our Patrons for their generous contributions, and thanks also to our special guests, Keila and the cat.

00:04:15 Desmatosuchus for Julie
00:26:00 Stygimoloch for Danielle
00:45:15 Cryptobranchids for Michael
01:00:00 Parrots for Beth
01:21:00 Graboids for Barbara

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YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Silver Screen Science - Tremors Mar 24, 2020

There’s a pandemic on, and we and many of our listeners are spending lots of time at home. On the bright side, it’s a good opportunity to watch movies and record Silver Screen Science! So, we’re putting together some new episodes, to keep you – and ourselves – entertained.

This episode, happy 30-year anniversary to: Tremors (1990)

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

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The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Episode 83 - Coelacanths Mar 21, 2020

In 1938, a fishing crew pulled up a fish that everyone thought had been extinct for 70 million years. Since then, coelacanths have become famous not just for their strangely incomplete fossil record, but also for their unique anatomy, their reclusive lifestyle, and their close relationship to land vertebrates. From fossils to genetics, this episode is all about what we know – and what we’re missing – of the story of coelacanths.

In the news: an old weasel, fish through time, daily bivalve growth, and cave cockroaches.

Time markers:
Intro & Announcements: 00:00:00
News: 00:06:00
Main discussion, Part 1: 00:34:30
Main discussion, Part 2: 01:03:00
Patron question: 01:36:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

The Common Descent Store is open! Get merch! http://zazzle.com/common_descent

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iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 82 - Trilobites Mar 07, 2020

Few fossil animals are as popular with the public, as abundant in the fossil record, or as important to the study of past life on Earth as trilobites. These ocean-dwelling arthropods came in an amazing variety of shapes, sizes, and lifestyles, with many thousands of identified species, and they persisted on our planet for more than 270 million years. And best of all, they left behind an incredible fossil record giving us insights into their evolution, life history, and ultimate extinction.

In the news: evolution of gliders, a weird worm, tiny marsupial lions, and dino DNA?

Time markers:
Intro & Announcements: 00:00:00
News: 00:05:00
Main discussion, Part 1: 00:36:30
Main discussion, Part 2: 01:10:30
Patron question: 01:51:30

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

The Common Descent Store is open! Get merch! http://zazzle.com/common_descent

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iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 81 - Metamorphosis Feb 22, 2020

Metamorphosis is the process that turns a caterpillar to a butterfly, a fry to a fish, and a tadpole to a frog. Animals have been metamorphosing for over 500 million years, from early crustaceans to the many fish, amphibians, and arthropods that do it today. Larvae, pupae, and adults are known in the fossil record, but the evolutionary history of this incredible life strategy is still mysterious.

In the news: a new tyrannosaur, early chameleons, giant turtles, and dinosaur temperatures.

Time markers:
Intro & Announcements: 00:00:00
News: 00:04:00
Main discussion, Part 1: 00:33:30
Main discussion, Part 2: 01:08:30
Patron question: 01:43:30

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

The Common Descent Store is open! Get merch! http://zazzle.com/common_descent

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iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 80 - Mary Anning Feb 08, 2020

Happy Darwin Day!

This time around, we’re talking about Mary Anning! She was one of the earliest modern paleontologists, she helped lay the groundwork for our modern methods of uncovering and understanding fossils, and she was famously underappreciated in her time. We’re joined in our discussion by our friend Brittney Stoneburg from the Western Science Center!

Follow Brittney on Twitter and Instagram: @brittandbone
And follow our friends at the Western Science Center!

In the news: elephant evolution, pterosaur feeding, Jurassic “firewalkers”, and ancient fungi.

Time markers:
Intro & Announcements: 00:00:00
News: 00:05:00
Main discussion, Part 1: 00:40:30
Main discussion, Part 2: 01:13:30

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

The Common Descent Store is open! Get merch! http://zazzle.com/common_descent

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YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 79 - Pterosaurs Jan 25, 2020

The first pterosaur to be scientifically identified was Pterodactylus, more than 200 years ago. Since then, scientists have grappled with understanding these bizarre and fantastic animals, aided by inspired science and incredible discoveries. In this episode, we’ll discuss what we know – and what we don’t know – about how these animals evolved, survived, and ruled the skies in the Age of Reptiles.

In the news: cassowary evolution, the oldest scorpions, sea floor taphonomy, and Neanderthal shells.

Time markers:
Intro & Announcements: 00:00:00
News: 00:08:30
Main discussion, Part 1: 00:38:30
Main discussion, Part 2: 01:22:00
Patron question: 02:10:00

We’ve donated our December 2019 Patreon earnings to WIRES to help with wildlife recovery in Australia. Learn more here: https://www.wires.org.au/

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

The Common Descent Store is open! Get merch! http://zazzle.com/common_descent

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iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

DragonCon 2019 Paleontology Hour Panel Jan 19, 2020

At DragonCon 2019, Will and David were part of the Paleontology Hour Panel, where a room full of nerds asked all their paleo-related questions to a panel of experts - and we recorded it!

We were joined on the panel by:
Trevor Valle @tattoosandbones
Charon Henning @TheOddAngel

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

The Common Descent Store is open! Get merch! http://zazzle.com/common_descent

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YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 78 - Exaptation Jan 11, 2020

Hand a kitchen appliance to a child and they’re likely to find a whole new way to use it. This happens in evolution, too – traits adapted for one purpose turn out to be beneficial for a whole other reason, and so the trajectory of natural selection changes. The term for this is exaptation, but it’s a complicated concept, and not everyone even likes using the word. Let’s discuss what this word means, why it exists, and what some people find wrong with it.

In the news: the oldest forest, an ancient parent, young T. rex, and fossil lungfish.

Time markers:
Intro & Announcements: 00:00:00
News: 00:04:30
Main discussion, Part 1: 00:35:30
Main discussion, Part 2: 01:00:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

The Common Descent Store is open! Get merch! http://zazzle.com/common_descent

Follow and Support us on:
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iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

End of the Year Q&A 2019 Dec 31, 2019

Happy New Year!

We got a ton of questions this year, so enjoy the end of the decade with this extra-long edition of David and Will saying the things you want to hear!

See you in the ‘20s!

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

The Common Descent Store is open! Get merch! http://zazzle.com/common_descent

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YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 77 - Fins to Feet: The Fish-Tetrapod Transition Dec 28, 2019

Happy New Year!

As we transition into a new decade, this episode is about one of the most important and incredible transitions in the evolutionary history of life. In the Late Devonian, one particular group of bony fish spent many millions of years experimenting with new forms of fins, skulls, and lifestyles, ultimately giving rise to the first land-dwelling vertebrates and setting the stage for 300 million years of continental dominance.

In the news: the earliest penguins, ancient whale swimming, dinosaur lice, and really old brains.

Time markers:
Intro & Announcements: 00:00:00
News: 00:04:00
Main discussion, Part 1: 00:30:30
Main discussion, Part 2: 00:59:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

The Common Descent Store is open! Get merch! http://zazzle.com/common_descent

Follow and Support us on:
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iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 76 - Horse Evolution Dec 14, 2019

The evolution of horses is a classic story, first because it is a beautiful example of evolution in the fossil record, and second because of how our scientific perspective of this story has shifted over the years. From the tiny forest-dwellers of the Eocene, barely recognizable as horse-relatives, to the mighty domesticated animals we know today, we’ll unpack what we know – and what we thought we knew – about horse evolution.

In the news: dinosaur teeth, alligator tools, ancient embryos, and dinosaur heads.

Time markers:
Intro & Announcements: 00:00:00
News: 00:05:00
Main discussion, Part 1: 00:37:00
Main discussion, Part 2: 01:15:00
Patron question: 01:47:30

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

We made an appearance on The Science of Pokémon to talk about - what else? - fossil Pokémon! https://podcasts.apple.com/us/podcast/history-of-galar/id1287752766?i=1000459595554

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iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

...But We Digress - Pokemon Paleontology Dec 08, 2019

Welcome to the world of Pokémon Paleontology! In this digression – by popular demand – we explore how the fictional world of Pokémon draws inspiration from real world science, particularly in regard to fossils and evolution. We’ll name our favorite fossil Pokémon, discuss Pokémon evolution, and point out where the Poké-science gets wonky.

What’s your favorite bit of Pokémon science?

We're doing another End of the Year Q&A! Submit your question here:
https://forms.gle/E398RmMhGvaYHpz6A

The Common Descent Store is open! Get merch! http://zazzle.com/common_descent

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iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 75 - The Great Oxidation Event Nov 30, 2019

Time for another extinction! This time, we’re discussing what might be the most ancient, most mysterious, and most catastrophic mass extinction event of all time. The Great Oxidation Event marks the turning point that set our atmosphere on course to its current oxygen-rich state and made the Earth hospitable for life as we know it … at the expense of all the life that came before.

In the news: the largest ape, early pollinators, early birds, and early snakes.

Time markers:
Intro & Announcements: 00:00:00
News: 00:04:30
Main discussion, Part 1: 00:36:00
Main discussion, Part 2: 01:09:30
Patron Question: 01:33:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

We're doing another End of the Year Q&A! Submit your question here:
https://forms.gle/E398RmMhGvaYHpz6A

The Common Descent Store is open! Get merch! http://zazzle.com/common_descent

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
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iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 74 - South America Nov 16, 2019

South America today is home to some of the most incredible ecosystems on the planet, and its fossil record is even more varied and fantastic. In this episode, we explore the history of the continent from its early formation to its long Cenozoic isolation, and we’ll highlight some of the strangest ancient creatures – especially its bizarre mammals – that have called South America home.

In the news: ancient ape locomotion, a Polish pliosaur, post-extinction Colorado, and one really old dinosaur.

Time markers:
Intro & Announcements: 00:00:00
News: 00:04:00
Main discussion, Part 1: 00:28:30
Main discussion, Part 2: 00:59:30
Patron question: 01:35:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

We're doing another End of the Year Q&A! Submit your question here:
https://forms.gle/E398RmMhGvaYHpz6A

The Common Descent Store is open! Get merch! http://zazzle.com/common_descent

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
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iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 73 - Trees Nov 02, 2019

Aly's back for more plants!

As our friend Aly is fond of pointing out, plants aren't just the colorful background of Earth history, they're dynamic and influential drivers of environmental change. And few plant innovations are more famous or important than the familiar form of a tree. For hundreds of millions of years, trees have formed the basis of many of our planet's most widespread and diverse ecosystems. In this episode, Aly takes us on a tour of tree history!

In the news: more dinosaur air conditioning, trilobite lines, moth hearing, and 1,000 plant trascriptomes.

Time markers:
Intro & Announcements: 00:00:00
News: 00:04:30
Main discussion, Part 1: 00:33:00
Main discussion, Part 2: 01:10:30
Patron question: 01:47:30

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

We're doing another End of the Year Q&A! Submit your question here:
https://forms.gle/E398RmMhGvaYHpz6A

The Common Descent Store is open! Get merch! http://zazzle.com/common_descent

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast/
PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Spook-E - Chimeras Oct 26, 2019

Welcome ... to Spookulative Evolution.

It’s October, and we’re back with more Spook-E! Each week this month, we’re choosing a creepy creature and discussing how it – or something like – might evolve biologically, pulling inspiration from critters of the real world. This month’s theme: monsters of Greek mythology.

In this final episode of this season, we take on the task of evolving the most famous of mythical hybrids. Can our evolutionary processes combine the traits of reptiles, mammals, and more? Our creatures to evolve this time: Chimeras.

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

The Common Descent Store is open! Get merch! http://zazzle.com/common_descent

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iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Muscial Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 72 - Plesiosaurs Oct 19, 2019

The oceans of the Mesozoic were home to a lot of fascinating sea predators, but perhaps none weirder than the plesiosaurs. Four giant flippers, tiny tails, and heads that ranged from enormous death traps to tiny noggins atop ridiculously long necks; there’s truly nothing like them in the world today, which makes them quite the prehistoric puzzle. In this episode, we’ll discuss what we know about them and what questions remain unanswered.

In the news: sauropod beaks, croc snouts, the last mammoths, and mold pigs!

Time markers:
Intro & Announcements: 00:00:00
News: 00:04:00
Main discussion, Part 1: 00:34:00
Main discussion, Part 2: 01:03:00
Patron question: 01:35:30

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

The Common Descent Store is open! Get merch! http://zazzle.com/common_descent

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast/
PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Spook-E - Hydras Oct 19, 2019

Welcome ... to Spookulative Evolution.

It’s October, and we’re back with more Spook-E! Each week this month, we’re choosing a creepy creature and discussing how it – or something like – might evolve biologically, pulling inspiration from critters of the real world. This month’s theme: monsters of Greek mythology.

This episode, we tackle the great monster of Lerna. How can we use nature's toolkit to evolve a poisonous lake-dwelling beast whose multiple heads constantly grow back? Our creatures to evolve this time: Hydras.

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

The Common Descent Store is open! Get merch! http://zazzle.com/common_descent

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
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PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Muscial Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Spook-E - Gorgons Oct 12, 2019

Welcome ... to Spookulative Evolution.

It’s October, and we’re back with more Spook-E! Each week this month, we’re choosing a creepy creature and discussing how it – or something like – might evolve biologically, pulling inspiration from critters of the real world. This month’s theme: monsters of Greek mythology.

This episode, we're talking about Medusa and her kin. How could natural selection produce a serpentine humanoid with snakes for hair and a gaze that turns people to stone? Our creatures to create this time: Gorgons.

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

The Common Descent Store is open! Get merch! http://zazzle.com/common_descent

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast/
PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Muscial Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 71 - The Western Interior Seaway Oct 05, 2019

During the Cretaceous Period, North America flooded. The entire middle section of the continent was submerged, creating an inland sea that stretched from the Arctic to the Gulf of Mexico and hosted a unique and fascinating underwater ecosystem. Not only that, but it split west from east, creating two distinct "subcontinents." In this episode, we explore how this sea came to be, what lived within it, and what effect it had on land ecosystems of the time and the fossil record they left behind.

In the news: more crocs, the oldest fossils, a history of CO2, and unexpected fossil sex.

Time markers:
Intro & Announcements: 00:00:00
News: 00:04:30
Main discussion, Part 1: 00:33:00
Main discussion, Part 2: 01:11:00
Patron question: 01:35:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

The Common Descent Store is open! Get merch! http://zazzle.com/common_descent

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast/
PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Spook-E - Harpies Oct 05, 2019

Welcome ... to Spookulative Evolution.

It’s October, and we’re back with more Spook-E! Each week this month, we’re choosing a creepy creature and discussing how it – or something like – might evolve biologically, pulling inspiration from critters of the real world. This month’s theme: monsters of Greek mythology.

This episode, we turn to the multitude of stories about winged bird-like humanoids. How do you evolve something with wings and claws, a human face, and a penchant for thievery? Our creatures to create this time: Harpies.

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

The Common Descent Store is open! Get merch! http://zazzle.com/common_descent

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast/
PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Muscial Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 70 - Convergent Evolution Sep 21, 2019

With all the incredible diversity of life, it’s fascinating how often evolution repeats itself. The fossil record and the modern world are full of signs of this pattern of convergent evolution – similar pressures drive organisms to similar features and lifestyles. In this episode, we’ll talk about what exactly convergent evolution entails, share some of our favorite examples, and talk about how things can get a bit confusing.

Did we mention your favorite example of convergent evolution?

In the news: rhino DNA, baby sea turtles, sea snake breathing, and dinosaur temperatures.

Time markers:
Intro & Announcements: 00:00:00
News: 00:04:00
Main discussion, Part 1: 00:32:30
Main discussion, Part 2: 01:02:00
Patron question: 01:35:30

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

The Common Descent Store is open! Get merch! http://zazzle.com/common_descent

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast/
PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Muscial Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 69 - Ankylosaurs Sep 07, 2019

It’s dinosaur time again! This episode, the spotlight is on the “living tanks” of the Mesozoic, the armored ankylosaurs. These impressive creatures were covered head to tail in dazzling armor that puts most other fortified animals to shame. We’ll discuss what exactly they may have been doing with that armor and how they fit into dinosaur-filled ecosystems. Oh, and we’ll talk about those tail clubs, too.

In the news: shark-bitten whales, an early hominin skull, “killer” claws, and pterosaur poop.

Time markers:
Intro & Announcements: 00:00:00
News: 00:04:30
Main discussion: 00:32:00
Mid-discussion break: 01:01:00
Patron question: 01:40:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

The Common Descent Store is open! Get merch! http://zazzle.com/common_descent

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast/
PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Muscial Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 68 - Evolution of Eyes Aug 24, 2019

If you’re reading this, there’s a very good chance you’re using one of the most incredible tools in the animal toolkit: the eye! In this episode, we discuss what’s known – and what’s suspected – about the incredible evolutionary history of the eye. How many types of eyes are there? What is an eye, anyway? Just how difficult is it to evolve something so intricate and complex? All this and more!

In the news: a giant parrot, a giant penguin, ancient RNA, and crinoid rafts.

Time markers:
Intro & Announcements: 00:00:00
News: 00:05:00
Main discussion, Part 1: 00:32:00
Main discussion, Part 2: 01:09:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

We're going to be at DragonCon 2019!

The Common Descent Store is open! Get merch! http://zazzle.com/common_descent

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
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iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Muscial Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Voices of La Brea - Bonus Episode Aug 10, 2019

We were in southern California for NAPC recently, so we sat down with a bunch of the crew from La Brea to get some insights into their work, their history, and their favorite things about the site.

In this audio, you’ll hear from:
Dr. Emily Lindsey, Assistant Curator and Excavation Site Director
Dr. Mairin Balisi, NSF Postdoctoral Research Fellow
Laura Tewksbury-Wall, Senior Preparator
Sean Campbell, Preparator
Connie Clarke, Preparator
Students from the La Brea Tar Pits Field School

Thanks to everyone who spoke with us!

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

The Common Descent Store is open! Get merch! http://zazzle.com/common_descent

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
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iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Muscial Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 67 - The La Brea Tar Pits Aug 10, 2019

How odd that one of the world’s richest and most famous fossil sites isn’t on a mountain or in a desert, but in the heart of one of the world’s largest cities. In this episode, we’ll dive into the history of the La Brea Tar Pits, explore how the site came to be, and give just a taste of the staggering diversity of fossil finds that fuel research into the latest chapters of the Ice Age. Also, we’ll explain why “tar pits” isn’t really a great name for them.

In the news: a Cambrian Millennium Falcon, turtle bones, mammal ancestors, and a whale with a twist.

Don’t miss our Bonus Episode: Voices of La Brea, including interviews with a bunch of the crew!

Time markers:
Intro & Announcements: 00:00:00
News: 00:09:00
Main discussion, Part 1: 00:32:30
Main discussion, Part 2: 01:00:00
Patron question: 01:33:30

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

We're going to be at DragonCon 2019!

The Common Descent Store is open! Get merch! http://zazzle.com/common_descent

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast/
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iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Muscial Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 66 - Elephants Jul 27, 2019

This episode, we take a deep dive into the evolutionary story of Earth’s largest land mammals. Extinction has left us with only three elephant species today, but for tens of millions of years their extended family, the proboscideans, came in many weird and wondrous forms, from mammoths to mastodons to shovel-tuskers and more.

In the news: clam secrets, weird bird feet, surprise Greek humans, and early hominin breastfeeding.

Time markers:
Intro & Announcements: 00:00:00
News: 00:05:30
Main discussion, Part 1: 00:34:00
Main discussion, Part 2: 01:05:00
Patron question: 01:56:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

The Common Descent Store is open! Get merch! http://zazzle.com/common_descent

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast/
PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Muscial Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 65 - The Late Devonian Extinction(s) Jul 13, 2019

It’s Episode 65, and you know what that means … extinction! This time, we address the ancient and confusing Late Devonian extinction. This is traditionally considered one of the “Big 5,” but it doesn’t seem to be “one” extinction at all. Geologists and paleontologists continue to work at piecing together the various causes and consequences that create an extended series – several millions years long – of very unfortunate events that altogether comprise one of the worst biological crises in Earth history.

In the news: tyrannosaur smells, peccary behavior, and a talk (by us) about our podcast!

Time markers:
Intro & Announcements: 00:00:00
News: 00:05:00
Main discussion, Part 1: 00:33:30
Main discussion, Part 2: 00:59:30
Patron question: 01:37:30

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

The Common Descent Store is open! Get merch! http://zazzle.com/common_descent

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast/
PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Muscial Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 64 - Paleoart Jun 29, 2019

Featuring paleoartist and herpetologist Gabriel Ugueto!
Follow Gabriel on Twitter (@SerpenIllus) or at his website, gabrielugueto.com, and listen to his herpetology podcast: squamatespod.com

Can you picture paleontology without … pictures? For about as long as people have been digging up fossils, some have tried to recreate ancient organisms through art. Paleoartists combine artistic talents with detailed knowledge of life past and present to create their best hypotheses about the appearance of ancient species and ecosystems. Their work shows in the many images, animations, and sculptures that accompany research, museum displays, books, documentaries, and more. Paleoart is an inextricable piece of paleontology, and it’s all around us!

In the news: Arctic hyenas, dinosaur bone bacteria, a croc climate clock, and a big trilobite.

Time markers:
Intro & Announcements: 00:00:00
News: 00:04:30
Main discussion, Part 1: 00:31:30
Main discussion, Part 2: 01:08:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

The Common Descent Store is open! Get merch! http://zazzle.com/common_descent

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast/
PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Muscial Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Silver Screen Science – Godzilla (2014) and Godzilla: King of the Monsters (2019) Jun 29, 2019

Part 5 of 5 in this month’s series: KaiJune!

There’s a new Godzilla movie, and that means it’s time for more movie science! All June, we’ll be exploring giant monster movies, specifically looking at two of the most famous examples of all time: King Kong and Godzilla. How do these movies handle such subjects as prehistoric creatures, the science of paleontology, and the portrayal of scientists?

This episode, the latest installments: Godzilla (2014) and Godzilla: King of the Monsters (2019)

The Common Descent Store is open! Get merch! http://zazzle.com/common_descent

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
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The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Silver Screen Science – King Kong (2005) and Kong: Skull Island (2017) Jun 22, 2019

Part 4 of 5 in this month’s series: KaiJune!

There’s a new Godzilla movie, and that means it’s time for more movie science! All June, we’ll be exploring giant monster movies, specifically looking at two of the most famous examples of all time: King Kong and Godzilla. How do these movies handle such subjects as prehistoric creatures, the science of paleontology, and the portrayal of scientists?

This episode, Kong in the 21st century: King Kong (2005) and Kong: Skull Island (2017)

The Common Descent Store is open! Get merch! http://zazzle.com/common_descent

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

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YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Episode 63 - Sexual Selection Jun 15, 2019

The history of animal life on Earth has been shaped by sex. The struggle to reproduce puts unique evolutionary pressures on species which affect their behavior and even their physical form. Sexual selection is immensely important but trying to sort out the side effects of sex in the fossil record is notoriously tricky.

In the news: giant beavers, croc metabolism, schooling fish, and another new croc.

Time markers:
Intro & Announcements: 00:00:00
News: 00:06:30
Main discussion, Part 1: 00:35:00
Main discussion, Part 2: 01:10:30
Patron question: 01:46:00

The Common Descent Store is open! Get merch! http://zazzle.com/common_descent

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

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YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Muscial Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Silver Screen Science – Kaiju Concepts Jun 15, 2019

Part 3 of 5 in this month’s series: KaiJune!

There’s a new Godzilla movie, and that means it’s time for more movie science! All June, we’ll be exploring giant monster movies, specifically looking at two of the most famous examples of all time: King Kong and Godzilla. How do these movies handle such subjects as prehistoric creatures, the science of paleontology, and the portrayal of scientists?

This episode, we’re talking about kaiju in general, with special focus on Cloverfield (2008) and Pacific Rim (2013).

The Common Descent Store is open! Get merch! http://zazzle.com/common_descent

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

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YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Silver Screen Science - Gojira (1954) Jun 08, 2019

Part 2 of 5 in this month’s series: KaiJune!

There’s a new Godzilla movie, and that means it’s time for more movie science! All June, we’ll be exploring giant monster movies, specifically looking at two of the most famous examples of all time: King Kong and Godzilla. How do these movies handle such subjects as prehistoric creatures, the science of paleontology, and the portrayal of scientists?

This episode, a new monster is born: Gojira (1954)

The Common Descent Store is open! Get merch! http://zazzle.com/common_descent

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

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YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Episode 62 – Amber Jun 01, 2019

When it comes to exceptional forms of preservation, it’s hard to beat amber. These fossilized chunks of tree resin have provided some of the most incredible ancient remains ever found. In this episode, we’ll discuss how amber forms and where the most famous amber deposits are, and we'll just scratch the surface of the astonishing diversity of amber-enclosed treasures that teach us so much about ancient ecosystems.

In the news: dinosaur baby steps, ancient red mice, tip-toeing sauropods, and really old fungus.

Time markers:
Intro & Announcements: 00:00:00
News: 00:05:30
Main discussion, Part 1: 00:27:00
Main discussion, Part 2: 00:57:00
Patron question: 01:27:30

The Common Descent Store is open! Get merch! http://zazzle.com/common_descent

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

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YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Silver Screen Science - King Kong (1933) Jun 01, 2019

Part 1 of 5 in this month’s series: KaiJune!

There’s a new Godzilla movie, and that means it’s time for more movie science! All June, we’ll be exploring giant monster movies, centering around two of the most famous examples of all time: King Kong and Godzilla. How do these movies handle such subjects as prehistoric creatures, the science of paleontology, and the portrayal of scientists?

This episode, we begin where it began: King Kong (1933).

The Common Descent Store is open! Get merch! http://zazzle.com/common_descent

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

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The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Episode 61 - Behavior in the Fossil Record May 18, 2019

It’s easy to see how fossils can teach us what ancient animals looked like, or how they evolved. But what about the ways they moved, ate, socialized, reproduced? In this episode, we explore the innovative ways paleontologists have devised to interpret the behavior of ancient animals. From their bones, their tracks, their living relatives, and modern clever experimentation, we can come to understand more than you’d ever imagine about behavior in the fossil record.

In the news: a Denisovan jaw, a new bat-winged dinosaur, a cave of wonders, and a flapping robot.

Time markers:
Intro & Announcements: 00:00:00
News: 00:05:30
Main discussion, Part 1: 00:32:30
Main discussion, Part 2: 01:07:30
Patron question: 01:41:30

The Common Descent Store is open! Get merch! http://zazzle.com/common_descent

How do you become a paleontologist? A GREAT post by our friends at Time Scavengers!
https://timescavengers.blog/2019/05/13/how-do-you-become-a-paleontologist/

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

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YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Muscial Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 60 - Turtles May 04, 2019

Turtles are so weird and wonderful. They're unlike any other living reptiles, mostly because they've turned their entire torso skeleton into an armor-home. A glimpse into the fossil record reveals that they've been this way for more than 200 million years. And yet, with all our data on living and extinct turtles, they remain one of the most mysterious and confusing living vertebrate groups. Here's an episode about all of that.

In the news: death rolls, one huge predator, one weird crab, the Gray Site rhino, and a poop snake.

Time markers:
Intro & Announcements: 00:00:00
News: 00:03:00
Main discussion, Part 1: 00:35:30
Main discussion, Part 2: 01:07:30
Patron question: 01:36:30

The Common Descent Store is open! Get merch! http://zazzle.com/common_descent

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

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iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Muscial Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 59 - Bats Apr 20, 2019

Many groups of life have conquered the land and water, but only four times in evolutionary history has life taken to the air. The most recent group to achieve flight are bats. Their combination of flight and advanced echolocation have earned them an incredible diversity, a worldwide distribution, and a deep-seated place in human culture, but their evolutionary history is a long-standing mystery, and their fossil record is nearly non-existent. But that's not going to stop us from geeking out about them!

In the news: dinosaur scales, diverging crows, a new human, seal evolution, and that butchered mastodon again!

Time markers:
Intro & Announcements: 00:00:00
News: 00:04:30
Main discussion, Part 1: 00:36:00
Main discussion, Part 2: 01:09:30
Patron question: 01:49:00

The Common Descent Store is open! Get merch! http://zazzle.com/common_descent

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
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iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Muscial Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 58 - The Bone Wars Apr 06, 2019

It was the late 1800s, and paleontology was just getting started in the Americas. Two prolific and passionate scientists, Edward Drinker Cope and Othniel Charles Marsh, among the earliest prominent fossil researchers on the continent, struck up a legendary rivalry. Their battles took place in the field and in the literature, and over three decades they engaged in some of the nastiest and most petulant quarreling in scientific history. This infamous era in early paleontology became known as The Bone Wars.

In the news: an egg in an ancient bird, a new mastodon, a giant T. rex, and the day the Cretaceous ended.

Time markers:
Intro & Announcements: 00:00:00
News: 00:05:00
Main discussion, Part 1: 00:39:30
Main discussion, Part 2: 01:07:30
Patron question: 01:47:30

The Common Descent Store is open! Get merch! http://zazzle.com/common_descent

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Follow and Support us on:
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YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Muscial Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 57 - Evolution of Flowering Plants (Angiosperms) Mar 23, 2019

Look who's back - our favorite paleobotanist, Aly Baumgartner!

And that means it’s time for more plants! As you may have noticed, the world around you is absolutely full of flowers. Angiosperms have dominated nearly every terrestrial ecosystem on the planet, but the story of their early evolution is a famous conundrum. Darwin called it an “abominable mystery,” but there are some tantalizing clues as to how this group of plants got their start and then evolved to the incredible diversity we see today.

In the news: new Cayman mammals, louse camouflage, a geologic orrery, and language evolution.

Time markers:
Intro & Announcements: 00:00:00
News: 00:04:00
Main discussion, Part 1: 00:35:30
Main discussion, Part 2: 01:10:00

Follow Aly on Twitter: @kyrietree

The Common Descent Store is open! Get merch! http://zazzle.com/common_descent

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

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iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Muscial Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Sloth Chat Livestream 2018 Mar 19, 2019

In April 2018, we hosted this Sloth Chat Livestream!

Following up from Episode 24 (Sloths), we were joined by sloth scientists Ryan Haupt and Robert McAfee to answer audience questions about sloths, living and extinct!

For anyone who didn't (or doesn't want to) watch it on YouTube, here it is in audio format for your listening pleasure!

You can also still watch the original recording on YouTube: https://www.youtube.com/watch?v=qirqw5ei45U

Find Ryan:
https://ryanhaupt.com/
Twitter: @haupt

Find Robert:
http://slothsearch.com
Twitter: @DocSloth

Hear Ryan and Robert discuss sloths on Science … Sort Of:
https://sciencesortof.com/show-notes/2014/10/episode-207-drop-bears-of-south-america
https://sciencesortof.com/show-notes/2016/6/episode-242-the-little-slothologist-that-could

Hear Will and David chat with Ryan on Science … Sort Of:
https://sciencesortof.com/show-notes/2018/7/episode-287-descent-into-madness

Keep up to date with modern sloth conservation with the Sloth Conservation Foundation, founded by Dr. Becky Cliffe, the one sloth scientist who didn’t make it to our Sloth Chat: https://slothconservation.com/

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The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Episode 56 – The Evolution of Evolutionary Theory Mar 09, 2019

One of the main themes of this podcast is the evolutionary history of life. This concept is familiar to all of us today, but our current understanding of evolution is the culmination of a very long history of scientific inquiry. In this episode, we’ll introduce you to some of the biggest names in this story, from Aristotle to Darwin, as we explore the evolution of evolutionary theory.

In the news: tiny frogs, an ancient nesting ground, algae evolution, and a tusked sea cow.

Time markers:
Intro & Announcements: 00:00:00
News: 00:06:00
Main discussion, Part 1: 00:30:30
Main discussion, Part 2: 01:11:30

The Common Descent Store is open! Get merch! http://zazzle.com/common_descent

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

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iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Muscial Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 55 - The "Sixth Extinction" (Modern Biodiversity Crisis) Feb 23, 2019

Usually, when we talk about mass extinction, we’re referring to events long past. But scary levels of extinction are a fact of our current world, as well. So much so that current events have been labeled the "Sixth Extinction.” In this episode, we discuss just how bad our current ecological crisis is, what’s causing it, and whether or not it truly deserves to be called a mass extinction. We also discuss what’s already being done – and what we can all do – to counteract catastrophe. It’s a depressing one, folks, but all isn’t lost. Stay informed and stay hopeful!

In the news: a new island, ancient turtle cancer, megalodon extinction, and that one Archaeopteryx feather.

Time markers:
Intro & Announcements: 00:00:00
News: 00:07:30
Main discussion, Part 1: 00:44:30
Main discussion, Part 2: 01:21:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Follow and Support us on:
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iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Muscial Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 54 - Alfred Russell Wallace Feb 09, 2019

Happy Darwin Day! Last year around this time, we were joined by Dr. Sarah Bray to discuss the life and times of Charles Darwin. This time, Sarah joins us again to discuss his colleague and natural selection co-discoverer, Alfred Russell Wallace. In 1858, the year before Darwin published his famous book, he received a letter from a young, adventurous, sometimes tragic man in the throes of illness in southeast Asia. To Darwin’s shock, the letter included precisely the same biological insights he had been working on. That letter came from Alfred Russell Wallace.

Find Sarah and her colleagues on the podcast Discovering Darwin! http://discoveringdarwin.blogspot.com/

In the news: fast-evolving mice, a small-headed reptile, an early Antarctic archosaur, and really old amoebae.

Time markers:
Intro & Announcements: 00:00:00
News: 00:05:00
Main discussion, Part 1: 00:39:00
Main discussion, Part 2: 01:23:30

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Follow and Support us on:
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iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Muscial Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 53 - The Baculum (Penis Bone) Jan 26, 2019

It's been called the most diverse of all bones. It comes in an incredible variety of shapes and sizes, living and fossil, scattered across the mammalian family tree. It's called the baculum, the os penis, and in this episode we discuss what it does, who has it, what it means for paleontologists, and the evolutionary processes that made it what it is today.

In the news: whales eating whales, pregnant plesiosaurs, robo-tetrapods, and the first American dogs.

Time markers:
Intro & Announcements: 00:00:00
News: 00:05:30
Main discussion, Part 1: 00:34:30
Main discussion, Part 2: 01:15:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
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iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Muscial Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 52 – Sounds of the Past (Fossil Bioacoustics) Jan 12, 2019

What did dinosaurs sound like? How did extinct animals make and use sound? Like most behaviors, noises don’t fossilize, but there is some tantalizing evidence that paleontologists have pulled together about fossil bioacoustics. In this episode, we discuss how pop-culture may have misled us, and how scientists have gathered actual clues from living animals and the fossil record – and have even made scientifically-inspired ancient audios! – to reconstruct the sounds of the past.

In the news: hatchling insects, bird brains, old flowers, and dinosaur noses.

Time markers:
Intro & Announcements: 00:00:00
News: 00:04:00
Main discussion, Part 1: 00:28:30
Main discussion, Part 2: 01:15:00

There are some noises in this episode! The living and reconstructed-fossil sounds we played came from these sources:

Great Bittern (Botaurus stellaris) Roger Charters/Macaulay Library at the Cornell Lab of Ornithology (ML202485) https://macaulaylibrary.org/asset/202485

American Alligator (Alligator mississippiensis) George B. Reynard/Macaulay Library at the Cornell Lab of Ornithology (ML163792) https://macaulaylibrary.org/asset/163792

Parasaurolophus sound bite by Sandia National Laboratories and the New Mexico Museum of Natural History and Science with Paleontologist Tom Williamson and computer scientist Carl Diegert https://www.sandia.gov/media/dinosaur.htm

Katydid Stridulation from Jun-Jie Gu et al 2012. Wing stridulation in a Jurassic katydid (Insecta, Orthoptera) produced low-pitched musical calls to attract females, PNAS (Open access) https://www.pnas.org/content/early/2012/02/02/1118372109

All the other animal noises were just made by us!

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast/
PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Muscial Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

End of the Year Q&A 2018 Dec 31, 2018

Happy New Year! Big thanks to everyone who's supported us throughout the year, and big thanks to everyone who submitted questions to our Q&A! Here's roughly two hours of Will and David answering YOUR questions - the silly and the science-y. See you in 2019! Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast/
PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Muscial Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 51 - Mosasaurs Dec 30, 2018

Many times in the history of life on Earth, reptiles have returned to the oceans. There were three famous groups of marine reptiles during the Mesozoic, and in this episode, we’re discussing the last to evolve, the shortest-lived, and the greatest (in David’s opinion, anyway) of them. We’ll tell the tale of how one group of lizards evolved to dominate waters around the world during the reign of the mosasaurs.

In the news: hunting sabertooths, very strange feathers, megalodon temperature, and feathered(?) pterosaurs.

Time markers:
Intro & Announcements: 00:00:00
News: 00:05:00
Main discussion, Part 1: 00:39:30
Main discussion, Part 2: 01:12:30
Patron question: 01:49:30

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast/
PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Muscial Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 50 - Australia Dec 16, 2018

This episode, we take a tour of the land that takes home the prizes for oldest geologic materials, most marsupials, and (arguably) biggest island! Our trip through the history of this island-continent starts nearly at the very origin of our planet, and follows a fascinating history of shifting super-continents and shuffling ecosystems. Join us on a journey Down Under, to Australia.

In the news: Gray Site peccaries, a blubbery ichthyosaur, fossil fungus, and an Australian dinosaur.

Time markers:
Intro & Announcements: 00:00:00
News: 00:04:30
Main discussion, Part 1: 00:29:00
Main discussion, Part 2: 01:01:00
Patron question: 01:38:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Don't forget to submit your question for our End of the Year Q&A:
https://docs.google.com/forms/d/e/1FAIpQLSeZjgAw5vghNPOYJ7e1rKJnqMA-QUn2WgYjM5F4Oj336O49gQ/viewform?usp=sf_link

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast/
PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Muscial Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 49 - Fake Fossils Dec 02, 2018

It’s no secret we love paleontology; it’s a fascinating field of study. But sometimes our favorite subject is polluted and perverted by fraud. In this episode, we’re talking about fake fossils: why they happen, how they happen, and what effect they have on the paleontological community as a whole. And then it’s story time, where we review some of history’s most famous fossil fakes.

In the news: an early long-neck, tiny footprints, a huge dicynodont surprise, and the marsupial lion.

Time markers:
Intro & Announcements: 00:00:00
News: 00:03:00
Main discussion, Part 1: 00:31:00
Main discussion, Part 2: 01:08:30

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Don't forget to submit your question for our End of the Year Q&A:
https://docs.google.com/forms/d/e/1FAIpQLSeZjgAw5vghNPOYJ7e1rKJnqMA-QUn2WgYjM5F4Oj336O49gQ/viewform?usp=sf_link

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast/
PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Muscial Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 48 - Sharks Nov 18, 2018

This episode, it’s back into the ocean, this time to discuss one of the most successful groups of predators on the planet. Sharks are famously “ancient,” but their evolutionary story is complex and fascinating, stretching back more than 400 million years, from their assorted bizarre ancestors to the incredible diversity we see today.

In the news: nocturnal elephant birds, hadrosaur sounds, prehistoric protein preservation, and colorful dino eggs.

Time markers:
Intro & Announcements: 00:00:00
News: 00:03:30
Main discussion, Part 1: 00:31:00
Main discussion, Part 2: 00:58:30

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Don't forget to submit your question for our End of the Year Q&A:
https://docs.google.com/forms/d/e/1FAIpQLSeZjgAw5vghNPOYJ7e1rKJnqMA-QUn2WgYjM5F4Oj336O49gQ/viewform?usp=sf_link

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast/
PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Muscial Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 47 - Early Synapsids ("Proto-Mammals") Nov 04, 2018

Synapsids are a vast group of animals that includes only one living lineage: us mammals. But for about 100 million years before true mammals evolved, ancient synapsids were not only incredibly diverse, but dominant in ecosystems around the world. In this episode, we’ll explore some of this incredible variety of “proto-mammals” and track the long evolutionary transition that produced all the familiar traits that make us mammalian.

In the news: a new living croc, a carnivorous herbivorous dinosaur, strange old footprints, and fish origins.

Time markers:
Intro & Announcements: 00:00:00
News: 00:04:30
Main discussion, Part 1: 00:34:00
Main discussion, Part 2: 01:02:30

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast/
PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Muscial Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Spook-E - Zombies Oct 27, 2018

Welcome ... to Spookulative Evolution.

It's October, so we're exploring some more speculative evolution with a spooky twist! Each week this month, we'll be choosing a creepy creature and discussing how it - or something like it - might evolve biologically, pulling inspiration from the critters of the real world.

In this particularly disturbing episode, we consider mindless decomposing humans and parasitic host manipulation. How can we naturally arrive at a contagion that converts people into flesh-eating hoards? Our creature to create: Zombies.

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast/
PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Episode 46 - Cryptozoology Oct 21, 2018

Human culture is full of stories of marvelous creatures hiding in the wilds on the fringe of our understanding. Some are the stuff of local lore while others are world-famous, and some are even thought to be relicts of the distant past. The search for these “hidden animals” can be dramatic, sometimes controversial, and often less-than-scientific. It is the fascinating field of Cryptozoology.

In the news: a tiny dino skull, a fish-bitten pterosaur, evolution in darkness, and a history of kangaroos.

Time markers:
Intro & Announcements: 00:00:00
News: 00:04:00
Main discussion, Part 1: 00:29:00
Main discussion, Part 2: 01:08:30
Patron question: 01:37:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast/
PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Muscial Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Spook-E - Fish-People Oct 20, 2018

Welcome ... to Spookulative Evolution.

It's October, so we're exploring some more speculative evolution with a spooky twist! Each week this month, we'll be choosing a creepy creature and discussing how it - or something like it - might evolve biologically, pulling inspiration from the critters of the real world.

This episode, we think deeply about the Creature From the Black Lagoon and other myths of amphibious humanoids. How do you evolve something with the legs and arms of a human, but the fins and gills of a fish? Our creatures to create: fish-people.

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast/
PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Spook-E - Werewolves Oct 13, 2018

Welcome ... to Spookulative Evolution.

It's October, so we're exploring some more speculative evolution with a spooky twist! Each week this month, we'll be choosing a creepy creature and discussing how it - or something like it - might evolve biologically, pulling inspiration from the critters of the real world.

This episode, we contemplate the evolution of aggressive predators that spread madness with their bite and get particularly nasty when the moon is full. How might evolution produce the lycanthropes of lore? Our creatures to create: Werewolves.

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast/
PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Episode 45 – The Permian Extinction (“The Great Dying”) Oct 07, 2018

252 million years ago, the Earth experienced what might be the worst extinction event of all time, so dramatic that it brought an end to the entire Paleozoic Era, that it resulted in the rise of entirely new types of ecosystems, and that it has come to be known as “The Great Dying.” This episode, we discuss the tragedy, the chaos, and the aftermath of the Permian Extinction.

In the news: the oldest animal, giant elephant birds, mammal jaw evolution, and one really big tree.

Time markers:
Intro & Announcements: 00:00:00
News: 00:04:00
Main discussion, Part 1: 00:27:30
Main discussion, Part 2: 00:59:30
Patron question: 01:33:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast/
PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Muscial Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Spook-E - Vampires Oct 06, 2018

Welcome ... to Spookulative Evolution.

It's October, so we're exploring some more speculative evolution with a spooky twist! Each week this month, we'll be choosing a creepy creature and discussing how it - or something like it - might evolve biologically, pulling inspiration from the critters of the real world.

This episode, how do you evolve large-bodied nocturnal sanguivores that can spread their condition to normal humans? How can biology arrive at the most iconic children of the night? Our creatures to create this time: Vampires.

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast/
PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

SciFest in St. Louis Sep 30, 2018

Will and David recently attended SciFest: Rock, Fossil, Quake! This was an event held at the St. Louis Science Center in collaboration with the Washington University School of Medicine.

The event brought scientists and science enthusiasts face-to-face to talk about geology, earthquakes, and - most exciting for us - fossils (mostly dinosaurs)!

In this episode, we recount some of our impressions and favorite parts of the event, and include interviews with six dinosaur paleontologists who attended the event. You'll hear from:

Dr. Ashley Morhardt, Washington University
Dr. Andy Farke, Raymond Alf Museum
Dr. Denver Fowler, Badlands Dinosaur Museum
Dr. Casey Holliday, University of Missouri
Dr. Liz Freedman Fowler, Dickinson State University
Josh Matthews, Burpee Museum
Huge thanks to all of the above - and everyone else involved in the event - for a fun day of science outreach!

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast/
PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Spotlight - Ranjeev Epa (5/5) Sep 29, 2018

Welcome to our Spotlight Series!

We’re talking paleo-science with some paleo-people! In this 5-part series, we’ve interviewed 5 different invertebrate paleontologists about their research and other work.

We wrap up this series by chatting with Ranjeev Epa about his research on the best animals ever (according to him), bivalves - that is, clams, oysters, etc. - and what preyed upon them in the distant past, and also about the paleo-PhD experience

Find Ranjeev in these places:
Twitter @RanjeevEpa
ResearchGate: https://www.researchgate.net/profile/Ranjeev_Epa

If you like Spotlight, let us know and we'll do more of it in the future!

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast/
PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Silver Screen Science - The Meg Sep 27, 2018

It's a movie about a giant prehistoric shark that eats a bunch of people. Let's talk science!

In this "science review," we're discussing The Meg (2018) - the portrayal of megalodon, the tropes of the scientists, and the movie's general relationship with real-world science.

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast/
PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome. More music like this at http://ocremix.org.

Episode 44 - Hybridization Sep 23, 2018

In this episode, we tackle the fascinating – and confusing – subject of hybridization. What are hybrids? Why are hybrids? And if organisms can breed across subspecies and species boundaries, what does that mean for our understanding of important topics like evolution, speciation, and conservation?

In the news: saber-tooth footprints, a Cambrian filter-feeder, false extinctions, and an ancient pet trade.

Time markers:
Intro & Announcements: 00:00:00
News: 00:06:00
Main discussion, Part 1: 00:36:00
Main discussion, Part 2: 01:10:30

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast/
PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Muscial Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Spotlight - Chris Mah (4/5) Sep 22, 2018

Welcome to our Spotlight Series!

We’re talking paleo-science with some paleo-people! In this 5-part series, we’ve interviewed 5 different invertebrate paleontologists about their research and other work.

It's Episode 4, and this time we have Dr. Chris Mah with us to explain the science of studying sea stars - past and present - and what it takes (or at least, what it has taken him) to run a science blog!

Find Chris in these places:
Twitter: @echinoblog
The Echinoblog, echinoblog.blogspot.com

If you like Spotlight, let us know and we'll do more of it in the future!

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast/
PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Spotlight - Alycia Stigall (3/5) Sep 15, 2018

Welcome to our Spotlight Series!

We’re talking paleo-science with some paleo-people! In this 5-part series, we’ve interviewed 5 different invertebrate paleontologists about their research and other work.

In Episode 3, our guest is Dr. Alycia Stigall, sharing with us her research on the best animals ever (according to her), brachiopods! And also discussing what it’s like to run a whole lab of paleontologists.

Find Alycia in these places:
http://www.alyciastigall.org/
Twitter: @alycia_stigall

If you like Spotlight, let us know and we'll do more of it in the future!

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast/
PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Episode 43 - The Great American Biotic Interchange (GABI) Sep 09, 2018

For tens of millions of years, North and South America were separate sisters across the sea, each with their own unique ecosystems. But around 3 million years ago, the Isthmus of Panama brought the landmasses together and kicked off an incredible mass migration of life between the continents. Some species thrived, others suffered, and in the end the very ecosystem structure of both continents was drastically altered, setting the stage for the American wildlife we know today.

In the news: prehistoric parasites, early turtle evolution, teeth through time, and a surprising hominin hybrid. Also, a devastating museum fire in Brazil.

Time markers:
Intro & Announcements: 00:00:00
News: 00:06:00
Main discussion, Part 1: 00:38:30
Main discussion, Part 2: 01:04:00
Patron question: 01:35:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast/
PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Muscial Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Spotlight - Adriane Lam (2/5) Sep 08, 2018

Welcome to our Spotlight Series!

We’re talking paleo-science with some paleo-people! In this 5-part series, we’ve interviewed 5 different invertebrate paleontologists about their research and other work.

It’s Episode 2, and we’re chatting with Adriane Lam to discuss her work exploring ancient oceans through tiny foraminifera (not technically invertebrates, we know…) as well as her efforts bringing scientists and science education to the public with Time Scavengers!

Find Adriane and Time Scavengers in these places:
Twitter: @ForamWhisperer; @TimeScavengers
Timescavengers.blog
Facebook.com/TimeScavengers/

If you like Spotlight, let us know and we'll do more of it in the future!

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

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Patreon: https://www.patreon.com/commondescentpodcast
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YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Spotlight - Dave Marshall (1/5) Sep 01, 2018

Welcome to our Spotlight Series!

We’re talking paleo-science with some paleo-people! Across this 5-part series, you’ll get to know some paleontologists as we interview them about their research and their lives as scientists.

Our theme for this series is Invertebrate Paleontology.

In this first episode, we sit down with Dave Marshall to chat about his research on eurypterids (sea scorpions!) and his work creating and running Palaeocast, the Virtual Natural History Museum, and more!

Find Dave in these places:
Twitter: @DaveJMarshall
Palaeocast.com
VNHM.org

If you like Spotlight, let us know and we'll do more of it in the future!

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
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iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Episode 42 - Spinosaurs Aug 26, 2018

It's a dinosaur episode! With their croc-like faces, their weird ornamentation, and their curious fondness for water, the spinosaurs are among the most bizarre and fascinating of all dinosaurs. In this episode, we introduce Spinosaurus and the gang and discuss why these dinos are so cool - and so controversial.

In the news: secrets of regeneration, a new pterosaur, a really old animal, and giant hunting insects.

Time markers:
Intro & Announcements: 00:00:00
News: 00:08:00
Main discussion, Part 1: 00:36:30
Main discussion, Part 2: 01:07:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
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iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Muscial Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 41 - Evolution of Whales Aug 12, 2018

There have been several times in evolutionary history where a land-dwelling group has transitioned to life in the water, but few have done it so successfully as the cetaceans. Not only are modern whales diverse and fascinating, but their ancestors have left behind an incredible fossil record of their transition into the sea. All that and more as we discuss the Evolution of Whales.

In the news: the evolution of ant castes, the strange skulls of aye-ayes, really old worms (maybe), and a shark turnover.

Time markers:
Intro & Announcements: 00:00:00
News: 00:06:00
Main discussion, Part 1: 00:34:00
Main discussion, Part 2: 00:59:00
Patron question: 01:38:30

Check out Will’s guest appearance on The Cruise Geeks podcast! https://thecruisegeeks.podbean.com/e/the-cruise-geeks-episode-26-geekettes-and-sharks/

Today’s Patron Question comes from Cheryl!

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Follow and Support us on:
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YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Muscial Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 40 - Madagascar Jul 29, 2018

The island of Madagascar, isolated from all other landmasses on Earth, hosts one of the planet’s most unique ecosystems. But it’s not just an interesting place today – the geologic and fossil history of this land is equally fascinating! In this episode, we take a tour through time, stopping off at some of Madagascar’s most magical moments to marvel at some truly unique and incredible assortments of life.

In the news: an early giant dinosaur, more on human origins, ancient fish appendages, and a baby snake in amber!

Time markers:
Intro & Announcements: 00:00:00
News: 00:06:00
Main discussion, Part 1: 00:37:30
Main discussion, Part 2: 01:07:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast/
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iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Muscial Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

...But We Digress - Mermaids Jul 22, 2018

We just talked last episode about Speculative Evolution, so now is a great time to tackle another request we received: to talk about mermaids!

In this digression, we discuss these famous mythical marine creatures and do some speculating of our own. Could aquatic humans evolve? And if so, what might they really look like?

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YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Episode 39 - Speculative Evolution Jul 15, 2018

This episode, we’re discussing the fun and fascinating “What If” thought experiments of evolution. From fantastical fictional stories to unusual scientific hypotheses to just-for-fun artistic creations, speculative evolution is all about exploring the unseen (and maybe never-to-be-seen) possibilities of real biological science. We’ll touch on some of our favorite “hard science fiction” as well as how this style of creative thinking can contribute to the study of real living creatures of the past ... and beyond.

In the news: Native American dogs, Neanderthal hunting methods, mammal testicle evolution, and plant-induced insect development.

Time markers:
Intro & Announcements: 00:00:00
News: 00:04:30
Main discussion, Part 1: 00:36:00
Main discussion, Part 2: 01:15:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
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iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Muscial Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 38 - Grass Jul 01, 2018

At long last, a plant episode!

Our friend Aly Baumgartner joins the podcast to teach us all about grass - it's not just part of the background! From humble beginnings during the Age of Reptiles, grasses have gone on to dominate global ecosystems (as well as human diet!) and continue to do so today. They are truly one of the most influential groups of life on Earth.

In the news: strange ancient reef fish, dinosaur tongues, a surprise extinct gibbon, and a history of primate claws.

Time markers:
Intro & Announcements: 00:00:00
News: 00:04:30
Main discussion, Part 1: 00:28:30
Main discussion, Part 2: 01:04:00

Follow Aly on Twitter! https://twitter.com/kyrietree

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast/
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iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Muscial Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Silver Screen Science - Jurassic World: Fallen Kingdom (5/5) Jun 30, 2018

Part 5 of 5!

This is it – the end of our series! We’ve now re-watched all the old movies and finally turned to the newest one for our “science reviews.” How do these movies handle such subjects as prehistoric creatures, the science of paleontology, and the portrayal of scientists?

Fresh out in theaters – Jurassic World: Fallen Kingdom (2018).

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YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Muscial Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 37.5 - More Birds Jun 24, 2018

Surprise!

We've gotten a lot of bird requests, so to follow up our Evolution of Birds discussion, we put together three mini-discussions based on other birds our listeners have asked to hear about:
1. The evolution and fossil history of flamingos.
2. The fossil record of the famous predatory "terror birds."
3. Argentavis and Pelagornis, history's largest flying birds.

Time markers:
Intro: 00:00:00
Flamingos: 00:02:30
Terror birds: 00:23:30
Giant flying birds: 00:46:30

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
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iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Muscial Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Silver Screen Science - Jurassic World (4/5) Jun 23, 2018

Part 4 of 5!

Our Jurassic Park review series is almost done! All month, we’ve been re-watching the movies and chatting about the science in a series of “science reviews.” How do these movies handle such subjects as prehistoric creatures, the science of paleontology, and the portrayal of scientists?

In this episode, the complex – and controversial – franchise revival: Jurassic World (2015).

Follow and Support us on:
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YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Episode 37 - Evolution of Birds Jun 17, 2018

Birds are such unique and fascinating animals; for many decades scientists have wondered at their evolutionary story – and so have many of our listeners! Well here it is: the Evolution of Birds, complete with some scientific history, key fossil finds, and a fly-by (yep) of the incredible diversity of critters that led to birds as we know them today

In the news: history of the Great Barrier Reef, giant bony fish, early African tetrapods, and the oldest lizards.

Time markers:
Intro & Announcements: 00:00:00
News: 00:03:30
Main discussion, Part 1: 00:31:00
Main discussion, Part 2: 00:56:30

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
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iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Muscial Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Silver Screen Science - Jurassic Park III (3/5) Jun 16, 2018

Part 3 of 5!

Every Saturday this month, we’re re-watching all of the Jurassic Park movies and chatting about the science in a series of “science reviews.” How do these movies handle such subjects as prehistoric creatures, the science of paleontology, and the portrayal of scientists?

This time, the last of the original trilogy: Jurassic Park III (2001).

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YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Silver Screen Science - The Lost World: Jurassic Park (2/5) Jun 09, 2018

Part 2 of 5!

Each Saturday in June, we’re re-watching all of the Jurassic Park movies and chatting about the science in a series of “science reviews.” How do these films handle such subjects as prehistoric creatures, the science of paleontology, and the portrayal of scientists?

Sequel time. The Lost World: Jurassic Park (1997).

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YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Episode 36 - Reefs Jun 03, 2018

In this episode, we’re examining the incredible formation of reefs! Not just coral – reef systems have been built by many different organisms over Earth history, and we’ll be touching on the details of these essential harbors of biodiversity: past, present, and prospects for the future.

In the news: bone-crushing dogs, ancient global warming, a tick in a web, and how birds bounced back.

Time markers:
Intro & Announcements: 00:00:00
News: 00:05:30
Main discussion, Part 1: 00:35:00
Main discussion, Part 2: 01:11:30
Patron question: 01:46:30

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast/
PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Muscial Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Silver Screen Science - Jurassic Park (1/5) Jun 01, 2018

Part 1 of 5!

By the end of June, there will be five Jurassic Park films! So for each of the five Saturdays this month, we’re re-watching all of the movies and chatting about the science in a series of “science reviews.” How do these movies handle such subjects as prehistoric creatures, the science of paleontology, and the portrayal of scientists?

This episode, we start at the beginning: Jurassic Park (1993).

Follow and Support us on:
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iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Episode 35 - De-extinction May 20, 2018

It's time for another extinction episode!

Is extinction truly forever? Could something like Jurassic Park actually be possible? If so, should we do it? As we speak, there are scientists around the world working on the early stages of answering these questions, and in the process developing the very real science of De-extinction.

In the news: sea-going crocs, giant sea snakes, early baleen whales, and super-ancient viruses.

Time markers:
Intro & Announcements: 00:00:00
News: 00:07:30
Main discussion, Part 1: 00:39:00
Main discussion, Part 2: 01:08:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast/
PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Muscial Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 34 - Ancient DNA May 06, 2018

Only a few decades ago, the idea of pulling DNA from long-dead organisms was the stuff of science fiction, but the field of ancient DNA is now totally real and thriving. In this episode, we discuss how we get DNA from ancient specimens and just a bit of the incredible world of information paleogenetics opens up for scientists.

In the news: Another ancient croc-cousin, human and sloth footprints, swimming human evolution, and the oldest wolverine!

Time markers:
Intro & Announcements: 00:00:00
News: 00:04:30
Main discussion, Part 1: 00:31:00
Main discussion, Part 2: 00:56:30

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast/
PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Muscial Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Crocs vs Snakes - The Poll Returns May 01, 2018

THE GREAT DEBATEIS BACK!

By popular demand!

Will and David agree on most things, but not this... Help us settle our long-running debate - choose a side!

Head to Twitter, Facebook, or Patreon and cast your vote!

And then, if you like, tell us what you really think...what's YOUR favorite group of animals?

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
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iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Survey Response and Q&A Apr 29, 2018

Thanks to everyone who filled out our Listener Survey!
In this bonus episode, we’re discussing the feedback we got on the survey and how we’re planning for the future of the podcast.
And then we’re answering all the wonderful questions you asked on the survey in an extended Q&A session! This starts about 20 minutes in.

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
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Facebook: https://www.facebook.com/commondescentpodcast/
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iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Muscial Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 33 - Ontogeny Apr 22, 2018

Animals don’t start their lives as tiny copies of adults; there are all sorts of changes that a creature goes through from fertilization to birth and from newborn to mature. This development is called ontogeny. In this episode, we discuss how ontogenetic change impacts animals as they grow, what we can learn from these patterns, and how ontogeny can cause confusion in the fossil record.

In the news: colorful moth fossils, an enormous ichthyosaur, Neanderthals' strange faces, and sea turtle navigation.

Time markers:
Intro & Announcements: 00:00:00
News: 00:05:00
Main discussion, Part 1: 00:30:30
Main discussion, Part 2: 01:08:30

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast/
PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Muscial Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 32 - Naracoorte Caves, Australia Apr 07, 2018

Over the past several hundred thousand years, Australia has witnesed numerous ice age cycles, ecosystems dominated by giant marsupials, the arrival of humans, the extinction of those giant animals, and more. And there may be no better window into this dynamic time period than the world-famous Naracoorte Caves of South Australia.
In the news: an infected dinosaur, humans' earliest steps in Canada, horny dinosaurs, and a four-eyed ancient lizard.

Time markers:
Intro & Announcements: 00:00:00
News: 00:05:00
Main discussion, Part 1: 00:32:30
Main discussion, Part 2: 00:57:30

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

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The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Muscial Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

Episode 31 - The Ediacaran Biota Mar 25, 2018

Before life as we know it, and before even the Cambrian Explosion, there was a time when the Earth was home to an assortment of strange squishy creatures so unusual that they defy most of our best attempts at classification. This episode, we discuss life’s earliest experiments with complex bodies: the Ediacaran Biota.
In the news: the last pterosaurs, ancient lost tails, island spider evolution, and the legs of gators and crocs.

Time markers:
Intro & Announcements: 00:00:00
News: 00:05:30
Main discussion: 00:31:30

Please take our LISTENER SURVEY! https://goo.gl/forms/sY8YUr5cme59ORR03

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The Podcast music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Episode 30 - Prehistoric Poop Mar 11, 2018

Everybody poops! Throughout the history of life on Earth, animals of all lifestyles have been littering the planet with little presents, and those few that fossilize become coprolites: unique time capsules that can serve as invaluable sources of information, not just on obvious stuff like ancient diets, but also about evolution, extinction, and more. This episode: we talk turds.
In the news: de-escalating plant evolution, reverse speciation in ravens, upside-down dinosaurs, and record-keeping giant sponges.

Time markers:
Intro & Announcements: 00:00:00
News: 00:06:00
Main discussion: 00:37:30

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

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The Podcast music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Episode 29 - Placoderms, The Armored Fish Feb 25, 2018

In the earliest millennia of vertebrate life on Earth, the seas were home to the placoderms, a diverse group of extinct armored fish whose evolutionary innovations set the stage for some of the most important features of vertebrate life. This episode, we talk about some of history's most influential placoderms, with a special spotlight on the most famous of armored fish, the giant predator Dunkleosteus.

In the news: asteroids and volcanoes, running lizards, Shawn's turtle, walking fish, and more on broken mastodon bones.

Time markers:
Intro & Announcements: 00:00:00
News: 00:02:30
Main discussion: 00:35:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

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The Podcast music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Episode 28 - Charles Darwin Feb 11, 2018

Happy Darwin Day!
In honor of Chuck's birthday (Feb 12), we are joined this episode by Dr. Sarah Bray of the Discovering Darwin podcast, to chat about the man whose research and writings laid the groundwork for our modern understanding of biology and evolution: Charles Darwin!
In the news: orange crocs, insect evolution, and footprints at NASA!

Time markers:
Intro & Announcements: 00:00:00
News: 00:05:00
Main discussion: 00:31:00

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http://commondescentpodcast.wordpress.com/

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The Podcast music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Episode 27 - Domestication Jan 28, 2018

This episode, we explore the evolutionary innovation that brought us a diversity of animal companions, from corgis to cattle to cauliflower, and jump-started our species’ rise to world dominance: Domestication.

In the news: a colorful new dinosaur, super-ancient butterflies, the evolution of tail weaponry, and migrating whale barnacles.

Time markers:
Intro & Announcements: 00:00:00
News: 00:02:00
Main discussion: 00:23:30

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

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The Podcast music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Episode 26 - Astrobiology Jan 14, 2018

This episode, we look to the stars! Our discussion takes a tour across the field of astrobiology, the broad and thought-provoking science that seeks to answer the questions of how life arises, where it thrives, and where we might find it elsewhere in the universe, incorporating everything from astronomy to paleontology along the way.

In the news: Ancient Americans, a frozen baby rhino, unique dinosaur bones, and a surprising shared feature of cells.

Time markers:
Intro & Announcements: 00:00:00
News: 00:03:30
Main discussion: 00:28:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

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The Podcast music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Episode 25 - The Pleistocene Megafaunal Extinction Dec 31, 2017

In this episode, we firmly establish a tradition of extinction-talk! This time, by request, it’s the latest major prehistoric extinction in Earth history, the event that took from us the mammoths, ground sloths, and other giants of the Ice Age, a mass extinction that our own species was around to witness (and perhaps even cause): the Pleistocene Megafaunal Extinction.

In the news: mistaken Archaeopteryx identity, ticks with a taste for dinosaurs, evolution of the Tibetan Plateau, and ancient bear hibernation.

Time markers:
Intro & Announcements: 00:00:00
News: 00:05:30
Main discussion: 00:32:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

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YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Podcast music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Episode 24 - Sloths Dec 17, 2017

This episode, by listener request, is all about sloths! We explore their bizarre family tree, their adorable and internet-favorite living representatives, and their diverse and truly incredible ancient members.

In the news: pterosaur eggs, a bizarre swimming dinosaur, the plight of paleontological monuments, and the ears of plesiosaurs.

Time markers:
Intro & Announcements: 00:00:00
News: 00:04:30
Main discussion: 00:33:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

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The Podcast music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Episode 23 - Jurassic Park Dec 03, 2017

Hold onto your butts … in this episode, we celebrate the intersection of science and popular culture with a discussion about the biggest dinosaur movie of all time, what makes it unique, and the incredible effect it had on the real-life world of paleontology: Jurassic Park.

In the news: a new Jurassic glider, Tasmanian stromatolites, the world’s longest dinosaur trackway, and a tool for tracking fossils.

Time markers:
Intro & Announcements: 00:00:00
News: 00:05:30
Main discussion: 00:28:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

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YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Podcast music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Episode 22 - Micropaleontology Nov 19, 2017

This episode, we take a super up-close look at the tiniest components of the fossil record, the microscopic remains that are so essential to our understanding of earth history, and the field of study devoted to them: Micropaleontology.

In the news: daytime mammals, unusual dinosaur teeth, the dinosaur family tree (again), and dead male mammoths.

Time markers:
Intro & Announcements: 00:00:00
News: 00:01:30
Main discussion: 00:27:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

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The Podcast music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Episode 21 - Dinosaurs, An Introduction Nov 04, 2017

There is no group of prehistoric creatures more iconic, more widely-studied, or more requested by our listeners, than the subject of this episode! This time, it's a brief introduction to Dinosaurs.

In the news: colorful dinosaurs, the rise of big herbivores, an Indian ichthyosaur, and saber-tooth DNA.

Time markers:
Intro & Announcements: 00:00:00
News: 00:04:00
Main discussion: 00:29:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

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The Podcast music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Episode 20 - The Scientific Method Oct 21, 2017

This episode, we’re taking a big step back at the concept that underlies everything we talk about on this podcast: the scientific method! Our discussion includes what exactly the method is, why we use it, and what can sometimes get lost in translation.

In the news: fossilized salamander organs, dinosaur proteins (or not), the bizarre comb jellies, and fanged kangaroos.

Time markers:
Intro & Announcements: 00:00:00
News: 00:02:00
Main discussion: 00:29:30

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

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The Podcast music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Diversity in Paleontology - Special Episode Oct 08, 2017

To coincide with Episode 19 of Common Descent, this is a compilation of voices, more than a dozen paleontologists sharing their varied perspectives on the subject of diversity, inclusivity, and inspiration in their favorite field of science.

Big thanks to all who participated!

Find Michelle at Femmes of STEM: https://www.femmesofstem.com/

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The Podcast music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Episode 19 - Women in Paleontology Oct 08, 2017

This is a listener-requested topic and a guest episode! We are joined by super-special guest Michelle Barboza-Ramirez of the Femmes of STEM podcast, who is here to help us explore the deep subject of Women in Paleontology. We talk about female scientists past and present, discuss the challenges they face, and reflect on the broad questions of diversity in the field of paleontology and other sciences.

In the news: baby saber-tooths; Triceratops brains; surprises in dinosaur poop; and super-ancient trilobite guts!

Time markers:
Intro & Announcements: 00:00:00
News: 00:06:30
Main discussion: 00:31:30

HUGE thanks to Michelle for helping us out! Find her at www.femmesofstem.com!

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

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The Podcast music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Episode 18B - Human Evolution Part 2 Sep 23, 2017

In the second part of our exploration of our own evolutionary past, we focus in on one particular recent group of big-brained, bipedal hominins. We explore their incredible diversity, their clever creations, and the origins of a species that we know better than any other.

In the news: Neanderthal plaque; very surprising footprints; our tiny mysterious cousins; and an ancient sugary secret.

Time markers:
Intro & Recap: 00:00:00
Main discussion: 00:03:30
News: 01:03:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

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The Podcast music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Episode 18A - Human Evolution Part 1 Sep 23, 2017

This time, by request, we discuss an ancient story so detailed, compelling, and important that we had to split it in two! In part one, we find our own place on the family tree of life, and trace the history and evolutionary innovations of our ancestors and cousins: the early hominins.

In the news: four-flippered swimming; the life of a dodo; weird whale teeth; and the many possible paths of evolution.

Time markers:
Intro & Announcements: 00:00:00
News: 00:03:30
Main discussion: 00:33:30

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

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The Podcast music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Episode 17 - The Society of Vertebrate Paleontology (SVP) Sep 10, 2017

In this episode, David tells tales of his trip to Calgary for this year’s SVP meeting: research presentations; meeting new people; paleo-field trips in Alberta; and more. If you’re into vertebrate paleontology, this is one of the biggest and more exciting events of the year!

In the news: several hundred research projects presented by paleontologists from all over the world, who came together at the end of August for the annual meeting of the Society of Vertebrate Paleontology! We mention just a few of these studies.

Time markers:
Intro & Announcements: 00:00:00
Main discussion (with News throughout): 00:04:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

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The Podcast music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Episode 16 - Cephalopods Aug 27, 2017

This episode, by request, we’re talking about one of our favorite groups of invertebrates! Specifically, invertebrates with big brains and squiggly arms - some with beautiful shells and others with incredible camouflage - and a fantastically rich fossil record stretching back over 500 million years: the cephalopods.

In the news: a giant gets a name; a confusing early dinosaur; some really old ice; and a rockstar croc.

Time markers:
Intro & Announcements: 00:00:00
News: 00:02:00
Main discussion: 00:30:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

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The Podcast music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Episode 15 - The End-Triassic Extinction Aug 13, 2017

This episode, we’re talking mass extinction again! Last time, we touched on the event that ended the Age of Dinosaurs, but this time – by listener request! – we’re discussing the event that started it: patterns and potential causes of the end-Triassic mass extinction.

In the news: a colorful armored giant; a surprise apex predator; epigenetics and variation; and some fast-evolving big-headed geckos!

Time markers:
Intro & Announcements: 00:00:00
News: 00:04:00
Main discussion: 00:35:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

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The Podcast music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Episode 14 - The Gray Fossil Site Jul 29, 2017

This episode, we finally take the time to talk in detail about the dig site we mention more than any other, the site where we both spent many years: the Gray Fossil Site! We discuss the site’s discovery, ongoing work, ancient ecosystem, and some of our own experiences.

In the news: the speed of T. rex, warm-blooded evolution, dinosaur sails, and the earliest Australians.

Time markers:
Intro & Announcements: 00:00:00
News: 00:05:30
Main discussion: 00:31:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

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The Podcast music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

...But We Digress - The History of Earth Jul 19, 2017

And now for something completely different!

Just how deep is Deep Time? Exactly how are important events arranged throughout our planet’s history? Which events are recent and which are ancient?

In this special episode, we take a tour through Earth History, from beginning to end, one million years per second: a virtual trip through geologic time!

Time markers:
Intro & Announcements: 00:00:00
Tour Through Time: 00:04:30

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The Podcast music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Episode 13 - The Fossil Preparation Lab Jul 16, 2017

The episode comes to you from inside the fossil prep lab, where we explore what goes into cleaning, repairing, and generally making fossils ready for study. We are joined by our friend Shawn Haugrud, as well as two of his lab’s head preparators: Shayleigh Maden and Davis Gunnin!

In the news: swimming strategies of plesiosaurs, surprise marine mass extinction, a bone-crushing Jurassic croc, and the temperature of dinosaur eggs.

Time markers:
Intro & Announcements: 00:00:00
News: 00:05:00
Main discussion: 00:32:30

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

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The Podcast music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Episode 12 - The Geologic Time Scale Jul 01, 2017

This episode is about the history of the earth, and how we compile all that we know about the ancient past in the great Geologic Time Scale.

In the news: the shapes of bird eggs, very ancient amphibians, more dinosaur faces, and the history of hippos.

Time markers:
Intro & Announcements: 00:00:00
News: 00:03:00
Main discussion: 00:32:00
Patron announcements & question: 01:32:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

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iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
Stitcher: http://www.stitcher.com/podcast/common-descent/the-common-descent-podcast

The Podcast music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Episode 11 - Antarctica Jun 17, 2017

This episode is another listener-requested topic! We’re discussing the fascinating and mysterious continent of Antarctica, its long complex history, and the rare and intriguing fossils that are found there.

In the news: a baby bird in amber, ancient elephant genetics, surprisingly early humans, and the formation of a famous dinosaur site.

Time markers:
Intro & Announcements: 00:00:00
News: 00:02:30
Main discussion: 00:33:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Follow and Support us on:
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The Podcast music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

...But We Digress - Tyrannosaur Skin (and Feathers?) Jun 09, 2017

We’re back for another digression!

Another new study is making (ridiculous) headlines all across the internet! It’s the first published investigation of Tyrannosaurus scales, by Bell et al., and it has people asking: where are the feathers?

You can access the study itself here: http://rsbl.royalsocietypublishing.org/content/13/6/20170092

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The Podcast music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Episode 10 - The Tree of Life Jun 03, 2017

This episode, we’re taking the time to talk about a subject that comes up just about every episode: the classification and relationships of living organisms. Taxonomy, Phylogeny, and the Tree of Life!

In the news: giant ground sloth diets, how whales got huge, the crunching jaws of T. rex, and the evolution of soldier bees!

Time markers:
Intro & Announcements: 00:00:00
News: 00:05:30
Main discussion: 00:28:00
Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/
Follow and Support us on:
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Stitcher: http://www.stitcher.com/podcast/common-descent/the-common-descent-podcast
The Podcast music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Episode 9 - The Cambrian Explosion May 21, 2017

In this episode, we’re discussing the dramatic event that saw the rise of modern animal life and formed the foundation for all animal ecosystems – an event as fascinating as it is mysterious – the Cambrian Explosion!

In the news: brand new armored dinosaurs, a long-lost dino-baby, surprises from the human family tree, and snake fossils from our favorite fossil site!

Time markers:
Intro & Announcements: 00:00:00
News: 00:04:00
Main discussion: 00:37:30

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Follow and Support us on:
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Stitcher: http://www.stitcher.com/podcast/common-descent/the-common-descent-podcast

The Podcast music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Episode 8 - Conservation Paleontology May 07, 2017

This episode topic comes from a fan request! We’re discussing how lessons from our planet’s prehistoric record can guide our efforts to preserve modern ecosystems: this is the field of conservation paleontology.

In the news: sword-tailed sea scorpions, finding ancient DNA without fossils, climate change during the end-Pleistocene extinction, and (maybe) the oldest humans in North America!

Time markers:
Intro & Announcements: 00:00:00
News: 00:04:30
Main discussion: 00:31:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Follow and Support us on:
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Stitcher: http://www.stitcher.com/podcast/common-descent/the-common-descent-podcast

The Podcast music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Episode 7 - Primates Apr 23, 2017

In this episode, we are joined by special guest Ethan Fulwood! He shares with us the fascinating diversity and evolutionary history of a familiar group of mammals called Primates.

In the news: an ancient dinosaur-cousin, bats with diverse diets, and ancient predator injuries.

Ethan’s on Twitter! @fulwoodomys

Time markers:
Intro & Announcements: 00:00:00
News: 00:02:00
Main discussion: 00:25:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Follow and Support us on:
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Stitcher: http://www.stitcher.com/podcast/common-descent/the-common-descent-podcast

The Podcast music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Episode 6 – Evolution of Flight Apr 09, 2017

On this episode, we’re discussing one of nature’s most incredible inventions: flight – who has it, how do they do it, and most mysteriously, how did it evolve?

In the news: Dinosaur footprints; tyrannosaur faces; life in a crater; and a beautiful ancient bird.

Time markers:
Intro & Announcements: 00:00:00
News: 00:02:30
Main discussion: 00:29:30

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Follow and Support us on:
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iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
Stitcher: http://www.stitcher.com/podcast/common-descent/the-common-descent-podcast

The Podcast music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

...But We Digress - Ornithoscelida Mar 29, 2017

Some big dinosaur-related news dropped last week - so big we just had to talk about it! So here's a mini-episode (a small digression) about the new study by Baron et al., and the phenomenon that has paleontologists going crazy: Ornithoscelida.

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The Podcast music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Episode 5 - The K-Pg Extinction (the "Dinosaur Extinction") Mar 25, 2017

In this episode, we discuss one of the most famously devastating events in Earth history – the mass extinction that ended the Age of Dinosaurs.

In the news: the first fish on land, the earliest sharks, some really old croc eggs, and some really really old plants!

Time markers:
Intro & Announcements: 00:00:00
News: 00:02:00
Main discussion: 00:30:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Follow and Support us on:
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iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
Stitcher: http://www.stitcher.com/podcast/common-descent/the-common-descent-podcast

The Podcast music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Episode 4 - Island Evolution Mar 11, 2017

In this episode, we’re exploring the unique and sometimes bizarre directions evolution takes on islands.

In the news: ancient tortoise DNA, a better picture of dinosaurs, oyster conservation, and a giant scary worm!

Time markers:
Intro & Announcements: 00:00:00
News: 00:07:00
Main discussion: 00:31:30

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

Follow and Support us on:
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iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2

The Podcast music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Episode 3 - Snakes Feb 25, 2017

This time around the topic is David’s favorite group of life: snakes. We look at their impressive diversity, their mysterious origins, and their long fossil history.

In the news: live-birth in archosaurs, ancient venom, horse evolution, and carnivorous plants!

Time markers:
Intro & Announcements: 00:00:00
News: 00:02:00
Main discussion: 00:28:30

Check out our blog for bonus info and pictures:

http://commondescentpodcast.wordpress.com/

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
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iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2

The Podcast music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Episode 2 - Crocodilians Feb 12, 2017

We’re back for Episode 2!

This episode we’re talking about Will’s favorite group of animals: crocodilians, their fascinating modern diversity, and their even more astonishing fossil history.

In the news: our bag-like ancestors, dinosaur proteins, giant otters, and Australian extinctions!

Time markers:
Intro & Announcements: 00:00:00
News: 00:02:30
Main discussion: 00:27:00

Check out our blog for bonus info and pictures: https://commondescentpodcast.wordpress.com/

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
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iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2

The Podcast music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Episode 1 - Paleontology Feb 09, 2017

It’s the first episode of the Common Descent Podcast!
Episode One’s discussion topic is the field of paleontology, our own experiences, and the kinds of things we’ll end up talking about in future episodes.

In the news: pterosaurs, sunspots, trilobites, and ghost sharks!

Time markers:
Intro & Announcements: 00:00:00
News: 00:03:00
Main discussion: 00:32:00

Check out the blog for bonus stuff: https://commondescentpodcast.wordpress.com/

Follow us on:
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast/
The Podcast music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org/