The Common Descent Podcast
Episode 96 - Marsupials

Episode 96 - Marsupials

September 19, 2020

Marsupials are like alternate-reality mammals. Everything about them, from their skeletons to their reproductive strategies, is just a bit strange – from the perspective of us placental mammals, that is! But you can’t argue with results, and marsupials include some of the most fascinating mammals of the past and present. In this episode, we track the long evolutionary journey that gave the modern world its kangaroos, koalas, possums, opossums, and more.

In the news: air-breathing sea scorpions, fish bone evolution, mastodon migrations, and burrowing dinosaurs.

Time markers:
Intro & Announcements: 00:00:00
News: 00:04:30
Main discussion, Part 1: 00:37:30
Main discussion, Part 2: 01:12:00
Patron question: 01:59:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

If you missed our DragonCon presentations, find them here:
https://www.youtube.com/watch?v=hDlI6lJgRsU
https://www.youtube.com/watch?v=nC-oSa9OMm8

New merch at the Common Descent Store! http://zazzle.com/common_descent
Featuring art by Rob Soto! https://www.rob-soto.com/

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
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Instagram: @commondescentpodcast
PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

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/

Episode 95 – The Carboniferous Rainforest Collapse

Episode 95 – The Carboniferous Rainforest Collapse

September 5, 2020

This episode marks the end of our extinction series, but on the bright side, Aly’s here!

Most of the extinction events we discuss are very animal-focused, but the end of the Carboniferous Period featured one of history’s worst plant extinctions. This event wiped out the famous ecosystems of the Carboniferous, reshuffled ecosystems, and ushered in a more familiar world of plants. In this episode, as usual, we discuss what happened, why, and how it impacted the world.

In the news: a croc-bitten sloth, a dinosaur embryo, dinosaur dimorphism, and ancient hibernation.

Time markers:
Intro & Announcements: 00:00:00
News: 00:09:00
Main discussion, Part 1: 00:46:30
Main discussion, Part 2: 01:21:00
Patron question: 01:55:30

Follow Aly on Twitter (@kyrietree) or Instagram (@paleolorax)

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

New merch at the Common Descent Store! http://zazzle.com/common_descent
Featuring art by Rob Soto! https://www.rob-soto.com/

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast
Instagram: @commondescentpodcast
PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

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/

Episode 94 - Dogs

Episode 94 - Dogs

August 22, 2020

Dogs are among the most diverse and successful mammalian predators on the planet, from widespread wild predators like wolves to the most iconic domestic species of all time in our own homes. This episode, we look at what makes dogs unique, where they got their start, what their fossil history has looked like, and finally how one species ended up being among the most widespread species on Earth.

In the news: hell ants, weird reptiles, dinosaur cancer, and “super-crocs”

Time markers:
Intro & Announcements: 00:00:00
News: 00:05:30
Main discussion, Part 1: 00:37:00
Main discussion, Part 2: 01:05:30
Patron question: 01:51:30

Listen to our guest appearance on Ask a Scientist! Thanks to Victoria for inviting us! https://askascientistpod.com/

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

New merch at the Common Descent Store! http://zazzle.com/common_descent
Featuring art by Rob Soto! https://www.rob-soto.com/

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast
Instagram: @commondescentpodcast
PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

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/

Episode 93 - Cats

Episode 93 - Cats

August 8, 2020

Cats are among the most diverse and successful mammalian predators on the planet, from lions on the savanna to ocelots in the jungle to domestic cats in homes and homepages worldwide. This episode, we look at what makes cats unique, where they got their start, what their fossil history has looked like, and finally how one species ended up being among the most widespread species on Earth.

In the news: African and American crocs, ancient owls, Fiji pigeons, and prey-breaking snakes.

Time markers:
Intro & Announcements: 00:00:00
News: 00:04:00
Main discussion, Part 1: 00:32:00
Main discussion, Part 2: 01:03:30
Patron question: 01:46:30

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

New merch at the Common Descent Store! http://zazzle.com/common_descent
Featuring art by Rob Soto! https://www.rob-soto.com/

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast
Instagram: @commondescentpodcast
PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

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/

Episode 92 - Eggs

Episode 92 - Eggs

July 25, 2020

Everybody starts somewhere, and most animals start inside an egg! Eggs are about as old and as varied as animal life itself, and when they show up in the fossil record, they can be very telling. In this episode we discuss what goes inside an egg, what makes them so special and useful, and what we can learn from their patchy fossil record.

In the news: early archosaurs, more on Dilophosaurus, Microraptor feathers, and a large dolphin.

Time markers:
Intro & Announcements: 00:00:00
News: 00:04:30
Main discussion, Part 1: 00:32:00
Main discussion, Part 2: 01:13:30
Patron question: 01:58:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

New merch at the Common Descent Store! http://zazzle.com/common_descent
Featuring art by Rob Soto! https://www.rob-soto.com/

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast
Instagram: @commondescentpodcast
PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

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/

Episode 91 - Frogs

Episode 91 - Frogs

July 11, 2020

Roughly nine out of ten living amphibian species are frogs. They’re incredibly diverse and successful, and they have been since the Jurassic Period. But the origins of frogs and their fellow modern amphibians is shrouded in mystery. In this episode, we discuss what makes frogs special, what their fossil record looks like, and what paleontologists know and don’t know about the earliest evolution of modern amphibians.

In the news: colorful insects, salamander evolution, saber-toothed marsupials, and venomous caecilians?

Time markers:
Intro & Announcements: 00:00:00
News: 00:04:30
Main discussion, Part 1: 00:36:00
Main discussion, Part 2: 01:11:00
Patron question: 01:41:00

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

New merch at the Common Descent Store! http://zazzle.com/common_descent
Featuring art by Rob Soto! https://www.rob-soto.com/

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast
Instagram: @commondescentpodcast
PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

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/

Episode 90 - “Living Fossils”

Episode 90 - “Living Fossils”

June 27, 2020

"Living fossils" aren't really a thing, not the way they're typically talked about anyway, and the term can be a source of debate among scientists and science communicators. In this episode, we talk about how this term is used and why some scientists defend it while others (including us!) aren't fans.

In the news: horned gophers, dinosaur eggs, giant eggs, and croc tracks.

Time markers:
Intro & Announcements: 00:00:00
News: 00:05:00
Main discussion, Part 1: 00:37:30
Main discussion, Part 2: 01:16:00
Patron question: 01:54:00

In light of current events, we invite you to explore these links to educate yourself, as we have been doing, about the subject of racial injustice:
Smithsonian NMAAHC - Talking About Race
https://nmaahc.si.edu/learn/talking-about-race
TimeScavengers - Black Lives Matter
https://timescavengers.blog/2020/06/01/black-lives-matter/
Ally Anti-Racism Resources
https://docs.google.com/document/d/1MjUESaOh2H-846KKiHUWHDUIhi3PlaFts-rqy9EQ43g/edit# 
We’ve also made a donation to the NAACP Legal Defense & Education Fund:
https://www.naacpldf.org/

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

New merch at the Common Descent Store! http://zazzle.com/common_descent
Featuring art by Rob Soto! https://www.rob-soto.com/

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast
Instagram: @commondescentpodcast
PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

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/

Episode 89 - The Burgess Shale

Episode 89 - The Burgess Shale

June 13, 2020

In the Canadian Rockies of British Columbia sits one of the most important, well-studied, and scientifically influential fossil sites in the world. The Burgess Shale not only provides us a glimpse into the tail end of the Cambrian Explosion, and not only yields tens of thousands of fossil specimens, but also includes some of the most exceptional fossil preservation of any fossil locality anywhere. This episode, we’ll dive into how it got that way, and what it has to tell us about some of Earth's earliest animal communities.

In the news: baby sharks, hungry dinosaurs, a pregnant ichthyosaur, and one dino’s last meal.

Time markers:
Intro & Announcements: 00:00:00
News: 00:06:30
Main discussion, Part 1: 00:34:00
Main discussion, Part 2: 01:00:00
Patron question: 01:37:00

In light of current events, we invite you to explore these links to educate yourself, as we have been doing, about the subject of racial injustice:
Smithsonian NMAAHC - Talking About Race
https://nmaahc.si.edu/learn/talking-about-race
TimeScavengers - Black Lives Matter
https://timescavengers.blog/2020/06/01/black-lives-matter/
Ally Anti-Racism Resources
https://docs.google.com/document/d/1MjUESaOh2H-846KKiHUWHDUIhi3PlaFts-rqy9EQ43g/edit# 
We’ve also made a donation to the NAACP Legal Defense & Education Fund:
https://www.naacpldf.org/

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

New merch at the Common Descent Store! http://zazzle.com/common_descent
Featuring art by Rob Soto! https://www.rob-soto.com/

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast
Instagram: @commondescentpodcast
PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

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/

Live Chat - Conservation Paleontology

Live Chat - Conservation Paleontology

June 4, 2020

In this series, we invite scientists to live Q&As on YouTube, where we discuss topics we’ve covered before on the podcast.

This episode, we discussed Conservation Paleontology (Episode 8) with Dr. Rachel Short and Dr. Jeff Martin of Texas A&M University. 

You can find the video recording on our YouTube channel: https://www.youtube.com/playlist?list=PLfdiT8Klm_YO04cvDqZ-_O3Iiq0J5GZJz

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

New merch at the Common Descent Store! http://zazzle.com/common_descent
Featuring art by Rob Soto! https://www.rob-soto.com/

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast
Instagram: @commondescentpodcast
PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Live Chat - Paleopathology

Live Chat - Paleopathology

June 2, 2020

In this series, we invite scientists to live Q&As on YouTube, where we discuss topics we’ve covered before on the podcast.

This episode, we discussed Paleopathology (Episode 84) with Laura Emmert of the Gray Fossil Site. 

You can also watch the video recording of this Live Chat on our YouTube channel: https://www.youtube.com/playlist?list=PLfdiT8Klm_YO04cvDqZ-_O3Iiq0J5GZJz

Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/

New merch at the Common Descent Store! http://zazzle.com/common_descent
Featuring art by Rob Soto! https://www.rob-soto.com/

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast
Instagram: @commondescentpodcast
PodBean: https://commondescentpodcast.podbean.com/
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw

The Intro and Outro music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

Play this podcast on Podbean App