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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!
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

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

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

Saturday Mar 30, 2024
Episode 188 - Cannibalism
Saturday Mar 30, 2024
Saturday 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/

Saturday Mar 16, 2024
Episode 187 - Migration
Saturday Mar 16, 2024
Saturday 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/

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

Saturday Mar 02, 2024
Episode 186 - Owls
Saturday Mar 02, 2024
Saturday 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/

Saturday Feb 17, 2024
Episode 185 - Cacti
Saturday Feb 17, 2024
Saturday 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/

Saturday Feb 03, 2024
Episode 184 - Richard Owen
Saturday Feb 03, 2024
Saturday 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/

Saturday Jan 20, 2024
Episode 183 - Feathers
Saturday Jan 20, 2024
Saturday 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/

Saturday Jan 06, 2024
Episode 182 - Camouflage
Saturday Jan 06, 2024
Saturday 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/
