Silver Screen Science is our series where we explore how science is portrayed on the big screen. This year, we’re focused on one recurring franchise: Planet of the Apes! This episode, we begin where it began, with the original movie about a world where simian society is turned upside-down – Planet of the Apes (1968). 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/commondesc...
Apr 02, 2025•1 hr 15 min•Ep. 321
Evolution just loves a nice pair of oversized canines, especially on mammalian predators. Saber-toothed animals have shown up over and over again – we even have some today – but despite their similarities, not all of these toothy species were using their canines the same way. This episode, we explore the various shapes of functions of saber teeth and the disparate lineages that have sported them. In the news: The Fossil Keeper’s Treasure, the size of megalodon, and vulture feathers. Time markers...
Mar 30, 2025•2 hr 38 min•Ep. 320
Our high-level Patreon supporters get to request a topic for their very own mini-episode! For the sixth time, we’ve put the latest bunch together for everyone to enjoy! Thank you as always to our incredible Patrons of all levels for keeping the podcast going! Intro: 00:00:00 Ambulocetus for Ambulocetus – 00:01:45 Abelisaurs for Quinn – 00:18:30 Capybaras for Melissa – 00:41:22 Pelicans for Johnathan – 01:02:05 Pikas for Hana – 01:31:45 Wooly rhinos for Eric – 01:51:25 Check out our website for b...
Mar 22, 2025•2 hr 18 min•Ep. 315
Leave a carcass or a log or a pile of poop out in the wild long enough and it will break down into its component parts. Decomposers are an often-overlooked but essential component of ecosystems past and present. This episode, we explore the varied processes of decomposition and how scientists study decomposers and use that information. We’ll also discuss the importance of decomposition to the fossil record, as well as how we can identify signs of decomposers from the distant past. In the news: t...
Mar 16, 2025•2 hr 18 min•Ep. 319
After you’ve listened to the Leaf it to Us pilot episode, enjoy this follow-up discussion where Nora, Aly, and David share their thoughts about that first episode and the upcoming season of the new podcast. You can contact us – and find more from Common Descent – here: https://linktr.ee/common_descent The Intro and Outro music is “Late Bloomer” by Devours. Find more from Devours at http://devours.bandcamp.com...
Mar 10, 2025•30 min•Ep. 318
Enjoy this special preview of the upcoming podcast Leaf it to Us, hosted by Nora Spurling and Dr. Aly Baumgartner. In this pilot episode, they discuss the fascinating phenomenon of sex-changing trees! The first season of Leaf it to Us is in the works, and we’re excited to hear your feedback for this pilot episode. Please reach out to us and let us know what you think! You can contact us and find more from Common Descent here: https://linktr.ee/common_descent The Intro and Outro music is “Late Bl...
Mar 10, 2025•33 min•Ep. 317
When vertebrates first moved onto land, they gave rise to a variety of amphibious tetrapods. The most diverse and successful of these were temnospondyls, which were some of the most important species in early land and freshwater environments. This episode, we’ll explore temnospondyls’ evolutionary history, their ecological variety, and their mysterious connection to modern amphibians. In the news: domesticating dogs, early birds, color evolution, and changing seeds. Time markers: Intro & Ann...
Mar 02, 2025•1 hr 42 min•Ep. 316
E. D. Cope is one of the most recognizable and notorious names in paleontology history. He did some of the most important early work in vertebrate paleontology, he was one half of the dueling duo in the infamous Bone Wars, he named some of the most famous fossil animals, and he was profoundly irresponsible and unethical with his science. This episode, we’re joined by Astrid Lundberg to explore the life and legacy of Edward Cope, investigating such questions as: How did he get his start? What las...
Feb 16, 2025•2 hr 35 min•Ep. 314
The evolution of mineralized tissues is responsible not only for the incredible success and diversity of vertebrate animals, but also for their extraordinarily informative fossil record. This episode, we explore the detailed anatomy of bones and their deep evolutionary history, we touch on some of the ways they’re important for paleontology, and we take some time to discuss the secrets that can be found inside of ancient bones. In the news: croc vs pterosaur, hominin diets, ears and gills, and r...
Feb 02, 2025•2 hr 25 min•Ep. 313
You might know them as ghost sharks, rat fish, or spook fish. Chimaeras are close cousins of sharks and rays, equipped with distinctive and unusual features in their fins, teeth, and reproductive structures. In today’s oceans, chimaeras are rare and easy to miss, but their extended family includes some of the most diverse and iconic fish of the Paleozoic seas. In this episode, we’ll explore the traits that set chimaeras apart, we’ll take a tour through their ancient relatives, and we’ll investig...
Jan 19, 2025•2 hr 27 min•Ep. 312
Southern Africa is home to an incredible sequence of geologic formations that span more than 100 million years of Earth history. These rocks, collectively called the Karoo Supergroup, are an extraordinary resource for studying evolution and extinction across the Late Paleozoic and Early Mesozoic Eras. This episode, we’ll explore the deep history of this vast geologic resource, and we’ll sample some of the discoveries that have been made there. In the news: dormancy evolution, Pangaean amphibians...
Jan 05, 2025•1 hr 49 min•Ep. 311
Happy New Year! Welcome back to our annual, traditional question-answering marathon! As always, a big thank you to everyone who submitted questions for this Q&A, everyone who has listened and shared and engaged with us throughout the year, and especially to our Patrons, who make this podcast possible. See you in 2025! Check out our website for our blog posts and more: http://commondescentpodcast.com/ Join us on Patreon to support the podcast and enjoy bonus content: https://www.patreon.com/c...
Dec 31, 2024•5 hr 23 min•Ep. 310
Most theropod dinosaurs are sleek predators built for speedy movement and efficient hunting. Therizinosaurs are unusual. They’re slow and stocky and, in many ways, more like the famous plant-eating dinosaurs. This episode, we’ll explore the diversity of therizinosaurs, the winding path that paleontologists took to understand them, the many ways they became specialized for a diet of plants, and what was going on with those claws. In the news: Parasaurolophus crests, Scottish bears, anglerfish evo...
Dec 22, 2024•2 hr 9 min•Ep. 309
Evolution involves the innovation of new features, but even more reduction of old features. Those reduced features might disappear, develop in a new direction, or just linger as a functionless evidence of deep ancestry. This episode, we explore how we identify vestigial traits, how they help us understand evolutionary history, and the various evolutionary paths vestigial structures can take. In the news: giant worm lizards, drumstick evolution, dinosaur poop, and pterosaur transitions. Time mark...
Dec 08, 2024•2 hr 8 min•Ep. 308
Welcome to Spotlight 2024! In this series, we’re sitting down with our fellow paleo-podcasters to discuss Science Communication. It’s the final episode! And we’re thrilled to be joined by Kallie, Gabriel, and Blake from PBS Eons and their podcast, Eons: Surviving Deep Time! Find Eons here: https://podcasts.apple.com/us/podcast/eons-surviving-deep-time/id1610360633 https://www.youtube.com/@eons Find Kallie online at @fossil_librarian and www.kallielmoore.com Kallie’s book, Tales of the Prehistori...
Dec 04, 2024•1 hr 20 min•Ep. 307
Not all plants rely on the sun for their energy. Thousands of species are adapted for stealing nutrients from other plants. This episode, Aly joins us to explore the diversity and evolution of parasitic plants, their varied lifestyles, and their impacts on their hosts. We also examine the surprising nature of the parasitic plant fossil record. In the news: a frozen sabertooth kitten, plesiosaur swimming, wing evolution, and dinosaur body armor. Time markers: Intro & Announcements: 00:00:00 N...
Nov 24, 2024•2 hr 21 min•Ep. 306
Around six million years ago, the Mediterranean Sea dried up, wreaking havoc with local marine life and leaving a dramatic legacy in the geologic record in the form of massive salt deposits. This episode, we’ll explore the evidence for this event, why it happened, how it ended, and the impact it left in the fossil record. In the news: marine crocs, giant cicadas, giant tadpoles, and drowning bats. Time markers: Intro & Announcements: 00:00:00 News: 00:04:25 Main discussion, Part 1: 00:42:35 ...
Nov 10, 2024•2 hr 15 min•Ep. 305
Welcome to Spotlight 2024! In this series, we’re sitting down with our fellow paleo-podcasters to discuss Science Communication. This time, we’re hanging out with Amy and Meaghan from Weird & Dead! Find Weird & Dead here: www.weirdanddead.com www.patreon.com/WeirdandDeadPodcast More from Amy and Meaghan: www.meaghanwetherell.com www.geopetalfabric.com https://dinosaurtrips.com/all-women-jurassic-coast/ Connect with Common Descent: https://linktr.ee/common_descent Join us on Patreon to su...
Nov 06, 2024•1 hr 10 min•Ep. 304
Welcome … to Cute-E! Every October during Spook-E, we have fun speculatively evolving monsters from myths and stories, but we leave out the cuddlier side of fiction. In Cute-E, we’re choosing kinder creatures and discussing 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 Tiny Monsters. This episode, we look at a local legend. How might real-world evolution result in elusive and mysteriou...
Nov 02, 2024•53 min•Ep. 303
Mice, rats, beavers, and more! Rodents are some of the most diverse and successful mammals on the planet. This episode, we discuss what traits make rodents special, and we explore their incredible living diversity. Then we’ll take a trip to the past to investigate early rodent evolution, some highlights of their fossil record, and some of their ancient competitors. In the news: Arthropleura’s head, raptorial birds, dinosaur eggs, and evolution education. Time markers: Intro & Announcements: ...
Oct 27, 2024•2 hr 28 min•Ep. 302
Welcome ... to Spookulative Evolution. October is Spook-E Season on Common Descent! Each episode, we pick monsters from fiction and fable and ponder 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 Tiny Monsters. This episode, there’s trouble afoot. How could biological processes generate ornery little fiends with gruesome headgear? Our creatures to create this time: Redcaps. Join the Com...
Oct 26, 2024•56 min•Ep. 301
Welcome ... to Spookulative Evolution. October is Spook-E Season on Common Descent! Each episode, we pick monsters from fiction and fable and ponder 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 Tiny Monsters. This episode, things heat up a bit. What selective pressures might lead to the evolution of skittering creatures with a fondness for fire? Our creatures to create this time: the ...
Oct 19, 2024•1 hr•Ep. 300
It’s the final part of our fungal trilogy! Fungi and animals interact in a wide variety of ways, from parasitism to partnership to predation. This episode, we explore how fungi and animals have evolved alongside each other and the adaptations they have developed to take advantage of each other, and we’ll examine how far back we can find these fungus-animal interactions in the fossil record. In the news: pterosaur feet, sauropod tails, a Cretaceous crater, and fossil fireflies. Time markers: Intr...
Oct 13, 2024•2 hr 56 min•Ep. 299
Welcome ... to Spookulative Evolution. October is Spook-E Season on Common Descent! Each episode, we pick monsters from fiction and fable and ponder 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 Tiny Monsters. This episode, we explore a favorite of fanciful fables. How might natural selection produce diminutive humanoids with a knack for mischief and mayhem? Our creatures to create thi...
Oct 12, 2024•1 hr 8 min•Ep. 298
Welcome ... to Spookulative Evolution. October is Spook-E Season on Common Descent! Each episode, we pick monsters from fiction and fable and ponder 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 Tiny Monsters. This episode, we’ve chosen a modern classic. How might we evolve adorable fluffy critters that transform into dangerous troublemakers? Our creatures to create this time: Gremlins...
Oct 05, 2024•1 hr 4 min•Ep. 297
Welcome to Spotlight 2024! In this series, we’re sitting down with our fellow paleo-podcasters to discuss Science Communication. This episode, we’re joined by one of the longest-running paleo-podcast hosts around: Dave Marshall from Palaeocast! Find Palaeocast here: https://www.palaeocast.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 ab...
Oct 02, 2024•59 min•Ep. 283
Our fungal celebration continues! The relationship between fungi and plants is one of the most famous and consequential connections in biological history. This episode, Aly is here to help us explore how fungi and plants work together and work against each other, what we know about the deep history of their relationship, and how fungi and plants together have shaped the world as we know it. Fungi will return… In the news: toothy birds, polar forests, coelacanth evolution, and a Pennsylvanian lag...
Sep 29, 2024•2 hr 50 min•Ep. 296
Mini-episodes are rewards for our high-level supporters on Patreon, each one focusing on a requested topic for a specific Patron. From time to time, we combine a bunch of these and release them as a bundle for all our listeners to enjoy. Enjoy! A huge thanks as always to our Patrons for their kind contributions to our education efforts. Intro: 00:00:00 T. rex for Sam – 00:02:02 Okapis for Sarah May – 00:30:00 Cicadas for Danielle – 00:48:43 Ants for Robert – 01:13:40 Polychaetes for Joshua – 01:...
Sep 22, 2024•2 hr 25 min•Ep. 288
Here it is! The most requested episode topic in the history of the podcast! Fungi are everywhere. This episode, we explore how fungi work, what makes them different from other organisms, and how they achieve a wide variety of lifestyles all over the world. We’ll also look back at their evolutionary history and fossil record to explore some of the most significant fungal moments of Earth’s past. Fungi will return… In the news: dinosaur teeth, pterosaur flight, bit bones, and ancient thylacines. T...
Sep 15, 2024•2 hr 40 min•Ep. 295
Welcome to Spotlight 2024! In this series, we’re sitting down with our fellow paleo-podcasters to discuss Science Communication. This episode, we chat with Gavin, Fia, and Mike, hosts of I Wish You Were Dead! Find I Wish You Were Dead in these places: https://open.spotify.com/show/4lMCmCwK9y9xThOMVUcHiM https://www.youtube.com/channel/UCbKAuMrj_7PUI0GqU9QQnhg https://www.facebook.com/IWishYouWereDeadPodcast www.twitter.com/DeadPodcast_ Connect with Common Descent: https://linktr.ee/common_descen...
Sep 04, 2024•1 hr 7 min•Ep. 282
