The Common Descent Podcast

Common Descent
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Oct 18, 2025 • 1h 3min

Spook-E – Kremlings

Welcome ... to Spookulative Evolution. Spook-E Season is back! All throughout October, we pick monsters from myth and media and speculate how they – or something like them – could evolve here on Earth, pulling inspiration from real-world species across our planet’s history. This year’s theme is Monsters of Nintendo! This time, we’re sailing with the scourges of DK Isle. What circumstances might lead to the evolution of crocodile-faced humanoid pirates? Our creatures to create this time: Kremlings. Join the Common Descent Discord server for more Spook-E 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.
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Oct 12, 2025 • 1h 55min

Episode 228 - Dinosaur Provincial Park

Located in southeastern Alberta is a stretch of gorgeous badlands that are home to some of the world’s absolute best Late Cretaceous fossils. This episode, we explore how Dinosaur Provincial Park earned its designation as a UNESCO World Heritage Site, we list off some of the famous dinosaurs who once lived there, and we discuss a fraction of the many fossil discoveries that have been made at the Park since the late 1800s. In the news: Cretaceous crocs, baby pterosaurs, late megaraptorans, and early lizards. Time markers: Intro & Announcements: 00:00:00 News: 00:06:25 Main discussion, Part 1: 00:47:45 Main discussion, Part 2: 01:08:35 Patron question: 01:47:00 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 Subscribe to Curiosity Box using our Affiliate Link: https://www.curiositybox.com/CommonDescent And get 25% off the first box with code descent25 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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Oct 11, 2025 • 57min

Spook-E – Octoroks

Welcome ... to Spookulative Evolution. Spook-E Season is back! All throughout October, we pick monsters from myth and media and speculate how they – or something like them – could evolve here on Earth, pulling inspiration from real-world species across our planet’s history. This year’s theme is Monsters of Nintendo! This episode, we take a trip to the Kingdom of Hyrule. How might nature develop an octopus-like monster with a penchant for projectiles? Our creatures to create this time: Ocotoroks. Join the Common Descent Discord server for more Spook-E 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.
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Oct 4, 2025 • 1h 6min

Spook-E – Piranha Plants

Welcome ... to Spookulative Evolution. Spook-E Season is back! All throughout October, we pick monsters from myth and media and speculate how they – or something like them – could evolve here on Earth, pulling inspiration from real-world species across our planet’s history. This year’s theme is Monsters of Nintendo! This episode, we begin with a baddie from the Mushroom Kingdom. What evolutionary path might generate a pipe-dwelling plant-like predator? Our creatures to create this time: Piranha Plants. Join the Common Descent Discord server for more Spook-E 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.
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Sep 28, 2025 • 2h 27min

Episode 227 - Beaks

The faces of vertebrate animals are often soft and full of teeth, but there is a common alternative. Birds, turtles, and many more groups have developed toothless snouts covered in a tough sheath. This episode, we’ll explore the defining features of beaks and their various functions. And we’ll take a tour through animal life past and present to investigate the reasons behind the repeated evolution of beaks among dinosaurs and beyond. In the news: Life on Mars, ancient sharks, mammoth microbes, and ant-eaters. Time markers: Intro & Announcements: 00:00:00 News: 00:07:00 Main discussion, Part 1: 00:42:40 Main discussion, Part 2: 01:38:25 Patron question: 02:21:50 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 Subscribe to Curiosity Box using our Affiliate Link: https://www.curiositybox.com/CommonDescent And get 25% off the first box with code descent25 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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Sep 14, 2025 • 2h 5min

Episode 226 - Dodos

Dodos are probably the single most famous case of recent human-induced extinction. First documented in the late 1500s and extinct within a century, dodos have become a global reminder of the devastating potential of human activity. This episode, we review the brief history of human interactions with dodos, and we explore what recent research and fossil evidence has taught us about these birds and their closest relatives. In the news: Cretaceous crocs, extra-spiky dinosaurs, turtles of the sea, and cave fish evolution. Time markers: Intro & Announcements: 00:00:00 News: 00:05:45 Main discussion, Part 1: 00:33:10 Main discussion, Part 2: 01:06:00 Patron question: 01:56:50 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 Subscribe to Curiosity Box using our Affiliate Link: https://www.curiositybox.com/CommonDescent And get 25% off the first box with code descent25 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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Aug 31, 2025 • 2h 56min

Episode 225 - Forests

Forests are among the most widespread and diverse biomes on our planet. This episode, we’re joined by our favorite paleobotanist, Dr. Aly Baumgartner, to explore what defines a forest, how these habitats function, and how they differ around the globe. Then, we’ll take a trip into the past to discuss how paleontologists study ancient forests and how these biomes have changed over hundreds of millions of years. In the news: ocean sediments, early penguins, island foxes, Canadian dragonflies, and ancient deer. Time markers: Intro & Announcements: 00:00:00 News: 00:06:00 Main discussion, Part 1: 00:37:30 Main discussion, Part 2: 01:47:10 Patron question: 02:48:35 Check out our website for this episode’s blog post and more: http://commondescentpodcast.com/ Listen to more Plants with Aly on Leaf it to Us! https://commondescentpodcast.com/leaf-it-to-us/ Join us on Patreon to support the podcast and enjoy bonus content: https://www.patreon.com/commondescentpodcast Subscribe to Curiosity Box using our Affiliate Link: https://www.curiositybox.com/CommonDescent And get 25% off the first box with code descent25 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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Aug 17, 2025 • 2h 15min

Episode 224 - Bipedalism

Most vertebrate animals on land get around on all fours, but some of us have committed to two-legged locomotion. This episode, we explore the various ways animals have evolved bipedalism and the many benefits that come with it. We’ll also take a look at how we identify bipedal animals in the fossil record, and we’ll zoom in on the evolutionary story behind Earth history’s most successful bipeds. In the news: potato origins, trilobite legs, bone worm burrows, and australopithecine sexes. Time markers: Intro & Announcements: 00:00:00 News: 00:07:35 Main discussion, Part 1: 00:35:15 Main discussion, Part 2: 01:10:50 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 Subscribe to Curiosity Box using our Affiliate Link: https://www.curiositybox.com/CommonDescent And get 25% off the first box with code descent25 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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86 snips
Aug 3, 2025 • 2h 39min

Episode 223 - Mutations

Discover the fascinating world of mutations, the driving force behind evolution and genetic diversity. The hosts dive into how these changes occur and their impact on species, using engaging examples like lactose tolerance and antibiotic resistance. They also explore Neanderthal tools and their surprising complexities, alongside recent findings in dinosaur behavior through unique footprints. Unravel the myths surrounding mutations, their role in health, and how nature delicately balances beneficial and harmful changes.
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Jul 20, 2025 • 2h 21min

Episode 222 - Shrews

On the outside, shrews might seem like standard tiny mammals, but their anatomy and lifestyle are highly specialized. This episode, with help from special guest Derek den Ouden, we explore the diverse habits of shrews, the anatomical features that set them apart, and how they thrive worldwide despite being perpetually on the brink of starvation. Then, we consider the extinct diversity of shrews in the fossil record. In the news: stubborn bass, choking fish, tomato defenses, and some really old rocks. Time markers: Intro & Announcements: 00:00:00 News: 00:09:35 Main discussion, Part 1: 00:45:25 Main discussion, Part 2: 01:40:50 Patron question: 02:12:35 Find Derek online at @DenoudenDerek 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 Check out our friends’ new data management app, Cnidarity: https://cnidarity.com/ 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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