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PODCAST

The Common Descent Podcast

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

science natural sciences

All Episodes

01:42:30

Episode 72 - Plesiosaurs

The Common Descent Podcast ·

2019/10/20

The oceans of the Mesozoic were home to a lot of fascinating sea predators, but perhaps none weirder than the plesiosaurs. Four giant flippers, tiny tails, and heads that ranged from enormous death traps to tiny noggins atop ridiculously long necks; there’s truly nothing like them in the world today, which makes them quite the prehistoric puzzle. In this episode, we’ll discuss what we know about them and what questions remain unanswered. In the news: sauropod beaks, croc snouts, the last mammoths,

en

50:07

Spook-E - Hydras

The Common Descent Podcast ·

2019/10/19

Welcome ... to Spookulative Evolution. It’s October, and we’re back with more Spook-E! Each week this month, we’re choosing a creepy creature and discussing how it – or something like – might evolve biologically, pulling inspiration from critters of the real world. This month’s theme: monsters of Greek mythology. This episode, we tackle the great monster of Lerna. How can we use nature's toolkit to evolve a poisonous lake-dwelling beast whose multiple heads constantly grow back? Our creatures to

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53:07

Spook-E - Gorgons

The Common Descent Podcast ·

2019/10/12

Welcome ... to Spookulative Evolution. It’s October, and we’re back with more Spook-E! Each week this month, we’re choosing a creepy creature and discussing how it – or something like – might evolve biologically, pulling inspiration from critters of the real world. This month’s theme: monsters of Greek mythology. This episode, we're talking about Medusa and her kin. How could natural selection produce a serpentine humanoid with snakes for hair and a gaze that turns people to stone? Our creatures to

en

01:43:03

Episode 71 - The Western Interior Seaway

The Common Descent Podcast ·

2019/10/06

During the Cretaceous Period, North America flooded. The entire middle section of the continent was submerged, creating an inland sea that stretched from the Arctic to the Gulf of Mexico and hosted a unique and fascinating underwater ecosystem. Not only that, but it split west from east, creating two distinct "subcontinents." In this episode, we explore how this sea came to be, what lived within it, and what effect it had on land ecosystems of the time and the fossil record they left behind. In the

en

40:33

Spook-E - Harpies

The Common Descent Podcast ·

2019/10/05

Welcome ... to Spookulative Evolution. It’s October, and we’re back with more Spook-E! Each week this month, we’re choosing a creepy creature and discussing how it – or something like – might evolve biologically, pulling inspiration from critters of the real world. This month’s theme: monsters of Greek mythology. This episode, we turn to the multitude of stories about winged bird-like humanoids. How do you evolve something with wings and claws, a human face, and a penchant for thievery? Our

en

01:43:46

Episode 70 - Convergent Evolution

The Common Descent Podcast ·

2019/09/22

With all the incredible diversity of life, it’s fascinating how often evolution repeats itself. The fossil record and the modern world are full of signs of this pattern of convergent evolution – similar pressures drive organisms to similar features and lifestyles. In this episode, we’ll talk about what exactly convergent evolution entails, share some of our favorite examples, and talk about how things can get a bit confusing. Did we mention your favorite example of convergent evolution? In the news:

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01:48:40

Episode 69 - Ankylosaurs

The Common Descent Podcast ·

2019/09/08

It’s dinosaur time again! This episode, the spotlight is on the “living tanks” of the Mesozoic, the armored ankylosaurs. These impressive creatures were covered head to tail in dazzling armor that puts most other fortified animals to shame. We’ll discuss what exactly they may have been doing with that armor and how they fit into dinosaur-filled ecosystems. Oh, and we’ll talk about those tail clubs, too. In the news: shark-bitten whales, an early hominin skull, “killer” claws, and pterosaur

en

01:38:08

Episode 68 - Evolution of Eyes

The Common Descent Podcast ·

2019/08/25

If you’re reading this, there’s a very good chance you’re using one of the most incredible tools in the animal toolkit: the eye! In this episode, we discuss what’s known – and what’s suspected – about the incredible evolutionary history of the eye. How many types of eyes are there? What is an eye, anyway? Just how difficult is it to evolve something so intricate and complex? All this and more! In the news: a giant parrot, a giant penguin, ancient RNA, and crinoid rafts. Time markers: Intro &

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01:08:40

Voices of La Brea - Bonus Episode

The Common Descent Podcast ·

2019/08/11

We were in southern California for NAPC recently, so we sat down with a bunch of the crew from La Brea to get some insights into their work, their history, and their favorite things about the site. In this audio, you’ll hear from: Dr. Emily Lindsey, Assistant Curator and Excavation Site Director Dr. Mairin Balisi, NSF Postdoctoral Research Fellow Laura Tewksbury-Wall, Senior Preparator Sean Campbell, Preparator Connie Clarke, Preparator Students from the La Brea Tar Pits Field School Thanks

en

01:39:23

Episode 67 - The La Brea Tar Pits

The Common Descent Podcast ·

2019/08/11

How odd that one of the world’s richest and most famous fossil sites isn’t on a mountain or in a desert, but in the heart of one of the world’s largest cities. In this episode, we’ll dive into the history of the La Brea Tar Pits, explore how the site came to be, and give just a taste of the staggering diversity of fossil finds that fuel research into the latest chapters of the Ice Age. Also, we’ll explain why “tar pits” isn’t really a great name for them. In the news: a Cambrian Millennium Falcon,

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02:05:03

Episode 66 - Elephants

The Common Descent Podcast ·

2019/07/28

This episode, we take a deep dive into the evolutionary story of Earth’s largest land mammals. Extinction has left us with only three elephant species today, but for tens of millions of years their extended family, the proboscideans, came in many weird and wondrous forms, from mammoths to mastodons to shovel-tuskers and more. In the news: clam secrets, weird bird feet, surprise Greek humans, and early hominin breastfeeding. Time markers: Intro & Announcements: 00:00:00 News: 00:05:30 Main

en

01:45:32

Episode 65 - The Late Devonian Extinction(s)

The Common Descent Podcast ·

2019/07/14

It’s Episode 65, and you know what that means … extinction! This time, we address the ancient and confusing Late Devonian extinction. This is traditionally considered one of the “Big 5,” but it doesn’t seem to be “one” extinction at all. Geologists and paleontologists continue to work at piecing together the various causes and consequences that create an extended series – several millions years long – of very unfortunate events that altogether comprise one of the worst biological crises in Earth

en

01:40:52

Episode 64 - Paleoart

The Common Descent Podcast ·

2019/06/30

Featuring paleoartist and herpetologist Gabriel Ugueto! Follow Gabriel on Twitter (@SerpenIllus) or at his website, gabrielugueto.com, and listen to his herpetology podcast: squamatespod.com Can you picture paleontology without … pictures? For about as long as people have been digging up fossils, some have tried to recreate ancient organisms through art. Paleoartists combine artistic talents with detailed knowledge of life past and present to create their best hypotheses about the appearance of

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57:08

Silver Screen Science – Godzilla (2014) and Godzilla:...

The Common Descent Podcast ·

2019/06/29

Part 5 of 5 in this month’s series: KaiJune! There’s a new Godzilla movie, and that means it’s time for more movie science! All June, we’ll be exploring giant monster movies, specifically looking at two of the most famous examples of all time: King Kong and Godzilla. How do these movies handle such subjects as prehistoric creatures, the science of paleontology, and the portrayal of scientists? This episode, the latest installments: Godzilla (2014) and Godzilla: King of the Monsters (2019) The Common

en

01:05:26

Silver Screen Science – King Kong (2005) and Kong:...

The Common Descent Podcast ·

2019/06/22

Part 4 of 5 in this month’s series: KaiJune! There’s a new Godzilla movie, and that means it’s time for more movie science! All June, we’ll be exploring giant monster movies, specifically looking at two of the most famous examples of all time: King Kong and Godzilla. How do these movies handle such subjects as prehistoric creatures, the science of paleontology, and the portrayal of scientists? This episode, Kong in the 21st century: King Kong (2005) and Kong: Skull Island (2017) The Common Descent

en

01:54:28

Episode 63 - Sexual Selection

The Common Descent Podcast ·

2019/06/16

The history of animal life on Earth has been shaped by sex. The struggle to reproduce puts unique evolutionary pressures on species which affect their behavior and even their physical form. Sexual selection is immensely important but trying to sort out the side effects of sex in the fossil record is notoriously tricky. In the news: giant beavers, croc metabolism, schooling fish, and another new croc. Time markers: Intro & Announcements: 00:00:00 News: 00:06:30 Main discussion, Part 1: 00:35:00 Main

en

01:08:50

Silver Screen Science – Kaiju Concepts

The Common Descent Podcast ·

2019/06/15

Part 3 of 5 in this month’s series: KaiJune! There’s a new Godzilla movie, and that means it’s time for more movie science! All June, we’ll be exploring giant monster movies, specifically looking at two of the most famous examples of all time: King Kong and Godzilla. How do these movies handle such subjects as prehistoric creatures, the science of paleontology, and the portrayal of scientists? This episode, we’re talking about kaiju in general, with special focus on Cloverfield (2008) and Pacific

en

54:09

Silver Screen Science - Gojira (1954)

The Common Descent Podcast ·

2019/06/08

Part 2 of 5 in this month’s series: KaiJune! There’s a new Godzilla movie, and that means it’s time for more movie science! All June, we’ll be exploring giant monster movies, specifically looking at two of the most famous examples of all time: King Kong and Godzilla. How do these movies handle such subjects as prehistoric creatures, the science of paleontology, and the portrayal of scientists? This episode, a new monster is born: Gojira (1954) The Common Descent Store is open! Get merch

en

01:34:27

Episode 62 – Amber

The Common Descent Podcast ·

2019/06/02

When it comes to exceptional forms of preservation, it’s hard to beat amber. These fossilized chunks of tree resin have provided some of the most incredible ancient remains ever found. In this episode, we’ll discuss how amber forms and where the most famous amber deposits are, and we'll just scratch the surface of the astonishing diversity of amber-enclosed treasures that teach us so much about ancient ecosystems. In the news: dinosaur baby steps, ancient red mice, tip-toeing sauropods, and really

en

45:10

Silver Screen Science - King Kong (1933)

The Common Descent Podcast ·

2019/06/01

Part 1 of 5 in this month’s series: KaiJune! There’s a new Godzilla movie, and that means it’s time for more movie science! All June, we’ll be exploring giant monster movies, centering around two of the most famous examples of all time: King Kong and Godzilla. How do these movies handle such subjects as prehistoric creatures, the science of paleontology, and the portrayal of scientists? This episode, we begin where it began: King Kong (1933). The Common Descent Store is open! Get merch

en

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