

The Common Descent Podcast
Common Descent
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!
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
Mentioned books

Aug 18, 2024 • 1h 54min
Episode 198 - Eels
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

Aug 7, 2024 • 1h 13min
Spotlight 2024 - Meredith Johnson, Origin Stories
Meredith Johnson, host of the Leakey Foundation's 'Origin Stories,' dives into the art of storytelling in science communication. She emphasizes how relatable narratives help explain human evolution, making complex concepts accessible. The discussion also covers engaging audiences through online communities and the excitement of connecting with listeners. They explore the challenges of building public trust in science and the innovative blending of storytelling with scientific facts, further encouraging collaboration among podcasters.

Aug 4, 2024 • 2h 12min
Episode 197 - Durophagy (Eating Hard Stuff)
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

Jul 21, 2024 • 2h 30min
Episode 196 - Boas and Pythons
Dive into the fascinating world of boas and pythons, exploring their striking adaptations and unique evolutionary histories. Discover recent paleontological finds, including giant early tetrapods and a new Triassic Pseudosuchian genus. Learn about the impressive sizes of these snakes, their hunting techniques, and the ecological roles of ancient species like Titanoboa. The hosts highlight invasive Burmese pythons in Florida and share community support for reptile conservation while celebrating their listener engagement.

Jul 7, 2024 • 3h 5min
Episode 195 - Leaves
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

Jul 3, 2024 • 1h 3min
Spotlight 2024 - Travis Holland, Fossils and Fiction
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.

Jun 23, 2024 • 2h 28min
Episode 194 - Alligators and Caimans
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

Jun 9, 2024 • 2h 3min
Episode 193 - Hopping
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

Jun 5, 2024 • 1h 12min
Spotlight 2024 - Sabrina and Garret, I Know Dino
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.

May 26, 2024 • 2h 11min
Episode 192 - Tongues
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


