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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

Saturday May 02, 2020
Episode 86 - New Zealand
Saturday May 02, 2020
Saturday 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/

Saturday Apr 18, 2020
Episode 85 – The Ordovician Mass Extinction
Saturday Apr 18, 2020
Saturday 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:
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/

Wednesday Apr 15, 2020
Silver Screen Science - Animals of the James Bond Franchise
Wednesday Apr 15, 2020
Wednesday 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.
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
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.

Tuesday Apr 07, 2020
Silver Screen Science - Godzilla (1998)
Tuesday Apr 07, 2020
Tuesday 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)
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
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.

Saturday Apr 04, 2020
Episode 84 - Paleopathology
Saturday Apr 04, 2020
Saturday 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
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/

Tuesday Mar 31, 2020
Silver Screen Science - Evolution (2001)
Tuesday Mar 31, 2020
Tuesday 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
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.

Sunday Mar 29, 2020
Patron Mini-Episode Compilation
Sunday Mar 29, 2020
Sunday 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
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
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/

Tuesday Mar 24, 2020
Silver Screen Science - Tremors
Tuesday Mar 24, 2020
Tuesday 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/
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
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.

Saturday Mar 21, 2020
Episode 83 - Coelacanths
Saturday Mar 21, 2020
Saturday 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
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/

Saturday Mar 07, 2020
Episode 82 - Trilobites
Saturday Mar 07, 2020
Saturday 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
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/
