The Common Descent Podcast

Latest Episodes:

Pok-É – Zygarde Feb 21, 2026

Show notes

Welcome ... to Pok-É!

This year is the 30th anniversary of the Pokémon franchise, so we’re picking some of our favorite Legendary Pokémon and speculating upon how they – or something like them – might evolve in real life, pulling inspiration from species throughout our planet’s history!

This episode, we grapple with the Order Pokémon. What biological explanations can we find for an ecological guardian of many, many faces? Our creature to create this time: Zygarde.

Join the Common Descent Discord server for more Pok-É 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

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

Episode 237 - The Dinosaur Renaissance Feb 14, 2026

Show notes

In the mid-to-late 20th Century, dinosaurs received a major makeover in their scientific and popular image. This episode, Riley Black takes us through the timeline of the Dinosaur Renaissance. We discuss some of the big scientific milestones and the various players which brought dinosaurs into their modern era, and we’ll explore the early signs and lingering notes of this historic shift.

In the news: sleepy jellyfish, fast mammals, bird beaks, and dinosaur diets.

Find Riley in these places:
https://rileyblack.net/
https://bsky.app/profile/restingdinoface.bsky.social
https://us.macmillan.com/author/rileyblack

Time markers:
Intro & Announcements: 00:00:00
News: 00:07:30
Main discussion, Part 1: 00:53:30
Main discussion, Part 2: 01:43:30
Patron question: 02:56:25

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

Pok-É – Giratina Feb 14, 2026

Show notes

Welcome ... to Pok-É!

This episode, we confront the Renegade Pokémon. From what ancestors might we get a many-limbed monster from a parallel world? Our creature to create this time: Giratina.

Join the Common Descent Discord server for more Pok-É 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

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

Pok-É – Lugia Feb 07, 2026

Show notes

Welcome ... to Pok-É!

This episode, we set our sights on the Diving Pokémon. How might evolution produce a sea-dwelling bird with a knack for stirring up storms? Our creature to create this time: Lugia.

Join the Common Descent Discord server for more Pok-É 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

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

Episode 236 - Chalicotheres Jan 31, 2026

Show notes

The Cenozoic Era was home to many unusual ancient mammals, but few so strange as the “gorilla-horses,” the ungulates that swapped their hooves for claws, chalicotheres. This episode, we discuss the features that make these animals distinct and which confused paleontologists for decades, and we go over what is known – and still unknown – about their evolution and lifestyles.

In the news: Let’s Botanize, Prototaxites identity, and giant kangaroos.

Find Let’s Botanize here: https://www.hachettebookgroup.com/titles/ben-goulet-scott/lets-botanize/9781635869040/
Book preorder promo: https://www.letsbotanize.org/preorder-promo.

Time markers:
Intro & Announcements: 00:00:00
News: 00:07:30
Main discussion, Part 1: 00:50:20
Main discussion, Part 2: 01:28:50
Patron question: 01:53:20

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 235 - Aquatic Plants Jan 17, 2026

Show notes

All plants need water, but some take it to the extreme. This episode, Dr. Aly Baumgartner joins us to explore the many life strategies of plants that live in the water. We’ll discuss the adaptations that allow them to lead an aquatic lifestyle, their evolutionary history as seen through genes and fossils, and the benefits that keep leading plants back to water.

In the news: fish diversity, ammonite survivors, gut microbes, and hiding dinosaurs.

Time markers:
Intro & Announcements: 00:00:00
News: 00:07:55
Main discussion, Part 1: 00:51:00
Main discussion, Part 2: 01:47:00
Patron question: 02:29:20

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 234 - Snails and Slugs Jan 03, 2026

Show notes

From deep-sea trenches to your home garden, gastropods (snails and slugs) are among the most diverse and successful groups of animal life in Earth history. This episode, we’ll explore what makes these animals distinctive, we’ll touch on their extraordinary fossil record, and we’ll investigate the many evolutionary experiments gastropods have undergone in their anatomy and lifestyle.

In the news: squishable ants, false saber-tooths, bee burrows, and baby ankylosaurs

Time markers:
Intro & Announcements: 00:00:00
News: 00:06:30
Main discussion, Part 1: 00:43:55
Main discussion, Part 2: 01:40:10
Patron question: 02:10:25

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

End of the Year Q&A 2025 Dec 31, 2025

Show notes

Happy New Year!

Please enjoy our annual question-answering marathon, now longer than ever! Thank you so much to everyone who listens, shares, and supports the podcast.

Check out our website 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/

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 233 - Flies and Mosquitoes Dec 20, 2025

Show notes

Of all the highly successful and capable flying insects in the world, few are as successful or capable as those in the order Diptera. This episode, we’re joined by special guest Brandon Strauss to discuss the distinctive anatomy and varied habits of flies, mosquitoes, and their many two-winged relatives. Then, we’ll peer into the past for a glimpse at the fossil record and dynamic evolutionary history of the group.

In the news: long-nosed crocs, river mosasaurs, stampeding sea turtles, and giant snakes

Find Brandon at punk_entomology on Instagram, Bluesky, and Twitch!

Time markers:
Intro & Announcements: 00:00:00
News: 00:05:35
Main discussion, Part 1: 00:38:30
Main discussion, Part 2: 01:38:35
Patron question: 02:25:55

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

Episode 232 - Vertebrate Origins Dec 06, 2025

Show notes

Today, bony animals are some of the most diverse organisms on Earth, but it wasn’t always that way. This episode, we explore what features distinguish vertebrates from their closest relatives, and we dive into the abundant evidence from genetics, embryology, and the fossil record that gives us a glimpse at how our distant ancestors came to be.

In the news: swimming hands, early life, Dunkleosteus jaws, and Neanderthal noses

Time markers:
Intro & Announcements: 00:00:00
News: 00:05:35
Main discussion, Part 1: 00:42:55
Main discussion, Part 2: 01:21:55
Patron question: 02:05:55

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

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