
5.5M
Downloads
351
Episodes
Join David and Will as they explore the paleontologists’ perspective on various topics in life and earth history. Each episode features a main discussion on a topic requested by the listeners, presented as a lighthearted and educational conversation about fossils, evolution, deep time, and more. Before the main discussion, each episode also includes a news segment, covering recent research related to paleontology and evolution. Each episode ends with the answer to a question submitted by subscribers on Patreon. New episodes with new topics every fortnight!
Episodes

Monday Mar 28, 2022
Patron Mini-Episode Compilation #2
Monday Mar 28, 2022
Monday 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
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
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.
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/

Saturday Mar 19, 2022
Episode 135 - Seeds
Saturday Mar 19, 2022
Saturday 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:
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.
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/

Monday Mar 14, 2022
The Art of Common Descent with Rob Soto
Monday Mar 14, 2022
Monday 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
Follow and Support us on:
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.

Saturday Mar 05, 2022
Episode 134 – Sanguivores (Blood-Eaters)
Saturday Mar 05, 2022
Saturday 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
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.
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/

Saturday Feb 19, 2022
Episode 133 - Symbiosis
Saturday Feb 19, 2022
Saturday 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:
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.
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/

Saturday Feb 05, 2022
Episode 132 - Mary and Louis Leakey
Saturday Feb 05, 2022
Saturday 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
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.
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/

Saturday Jan 22, 2022
Episode 131 - Volcanoes
Saturday Jan 22, 2022
Saturday 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
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 and Support us on:
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.
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/

Saturday Jan 08, 2022
Episode 130 - Sense of Smell
Saturday Jan 08, 2022
Saturday 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
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 and Support us on:
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.
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/

Friday Dec 31, 2021
End of the Year Q&A 2021
Friday Dec 31, 2021
Friday 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/
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 and Support us on:
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.

Saturday Dec 25, 2021
Episode 129 - Rhinos
Saturday Dec 25, 2021
Saturday 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
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 and Support us on:
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.
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/
