The Common Descent Podcast
Episode 107 – Tusks

Episode 107 – Tusks

February 20, 2021

Taking teeth to the extreme! Tusks have evolved numerous times, particularly in mammals, and they’ve come in a striking array of shapes and sizes for a variety of uses. From the monstrously huge ivory tusks of mammoths to the modest yet effective tusks of fanged deer to the bizarre and perplexing tusks of babirusas and narwhals, in this episode we discuss trends, drivers, and mysteries in the evolution of tusks.

In the news: razor-toothed mosasaurs, walk the dinosaur, sidewinder skin, and really old giant sloths.

Time markers:
Intro & Announcements: 00:00:00
News: 00:03:30
Main discussion, Part 1: 00:38:00
Main discussion, Part 2: 01:15:30
Patron question: 01:54:30

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

Find merch at the Common Descent Store! http://zazzle.com/common_descent

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Patreon: https://www.patreon.com/commondescentpodcast
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YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2

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 106 - Franz Nopcsa

Episode 106 - Franz Nopcsa

February 6, 2021

Happy Darwin Day!

Baron Franz Nopcsa was a paleontologist around the start of the 20th Century, remembered today for his innovative fossil research, his (in)famous personality, and his fantastic adventures across Eastern Europe. In this episode, we’ll discuss how this aristocrat became a paleontologist and how he contributed to our modern understanding of dinosaurs, and we’ll share some of the incredible and bizarre stories that surround him.

In the news: Parasaurolophus crests, sand striker burrows, dogs in Siberia, and life on Pinatubo.

Time markers:
Intro & Announcements: 00:00:00
News: 00:04:30
Main discussion, Part 1: 00:42:00
Main discussion, Part 2: 01:12:00
Patron question: 01:46:00

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

Find merch at the Common Descent Store! http://zazzle.com/common_descent

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/
YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw
iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2

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 105 - Carnivorous Plants

Episode 105 - Carnivorous Plants

January 23, 2021

A new tradition begins! Get ready for more plants with our friend Dr. Aly Baumgartner!

Most plants are content to sit still and take in sunlight and soil nutrients, but when conditions are tough, some plants get hungry! The habit of devouring small animals has evolved in plants several times. In this episode, we discuss what counts as carnivory in plants, why they do it, the various methods plants use to murder their meals, and what little we know about the evolutionary history of this behavior.

Time markers:
Intro & Announcements: 00:00:00
News: 00:03:30
Main discussion, Part 1: 00:41:30
Main discussion, Part 2: 01:19:00
Patron question: 02:03:30

Follow Aly on Twitter @kyrietree or Instagram @paleolorax

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

Find merch at the Common Descent Store! http://zazzle.com/common_descent

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 104 - Pinnipeds

Episode 104 - Pinnipeds

January 9, 2021

Seals, sea lions, and walruses (oh my!) are widespread, successful, and invariably charming. In this episode, we take a look at how they’re adapted for their aquatic lifestyles and how they might have gotten that way. We’ll explore some of the unanswered questions about their origins and evolution, and we’ll take a tour through their diverse but spotty fossil record.

Time markers:
Intro & Announcements: 00:00:00
News: 00:04:00
Main discussion, Part 1: 00:29:00
Main discussion, Part 2: 00:57:00
Patron question: 01:32:00

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

Find merch at the Common Descent Store! http://zazzle.com/common_descent

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/

End of the Year Q&A 2020

End of the Year Q&A 2020

December 30, 2020

Happy New Year!

A huge thanks to everyone who sent in questions for this year’s Q&A – we got more than we could even answer! – and to everyone who has supported the podcast this year by listening, sharing, donating, and reaching out to us.

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

Find merch at the Common Descent Store! http://zazzle.com/common_descent

Follow and Support us on:
Patreon: https://www.patreon.com/commondescentpodcast
Twitter: https://twitter.com/CommonDescentPC
Facebook: https://www.facebook.com/commondescentpodcast
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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.

Episode 103 – The Paleocene-Eocene Thermal Maximum

Episode 103 – The Paleocene-Eocene Thermal Maximum

December 26, 2020

The PETM has been called the largest natural climate change event of the Cenozoic Era. It marks the transition from the ecosystems of the Paleocene to the more familiar world of the Eocene and is thus an important step in making the world the way we know it today. But maybe most importantly, it is a dramatic case study in what happens when a huge amount of Carbon injected into the atmosphere triggers rapid warming of global climate … you know, in case anyone needs to know about that.

In the news: pterosaur cousins, oldest pythons, burrowed dinosaurs, and hibernating hominins.

Time markers:
Intro & Announcements: 00:00:00
News: 00:04:30
Main discussion, Part 1: 00:32:30
Main discussion, Part 2: 01:03:00
Patron question: 01:36:30

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

Find merch at the Common Descent Store! http://zazzle.com/common_descent

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 102 - Parasites

Episode 102 - Parasites

December 12, 2020

The word parasite doesn’t typically invoke a lot of happy thoughts for us humans, but as far as life on Earth is concerned, parasitism is a path to success. As we discuss in this episode, an incredible diversity of organisms, past and present, have developed an equally incredible diversity of strategies for stealing, siphoning, and exploiting resources from other organisms.

In the news: surprise bird beak, alligator tails, flightless birds, and chemical re-assessment.

Time markers:
Intro & Announcements: 00:00:00
News: 00:05:00
Main discussion, Part 1: 00:39:30
Main discussion, Part 2: 01:21:00
Patron question: 01:55:00

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

Submit your questions for our End of the Year Q&A using this form, closing December 15th! https://forms.gle/2BDWts2RaKzRo3hL8

Find merch at the Common Descent Store! http://zazzle.com/common_descent

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 101 - Sauropods

Episode 101 - Sauropods

November 28, 2020

Is there a group of dinosaurs more iconic than sauropods? Famous for their ridiculously long necks, their global success, their astounding diversity, and of course for their unparalleled size, sauropods have fascinated and puzzled people for centuries. In this episode, we’ll explore what makes sauropods and their ancestors special, and we’ll talk a bit about how they functioned at truly colossal scales.

In the news: strange-jawed sharks, ancient walruses, dinosaur demise, and the oldest blindsnakes.

Time markers:
Intro & Announcements: 00:00:00
News: 00:07:00
Main discussion, Part 1: 00:38:30
Main discussion, Part 2: 01:04:30
Patron question: 01:42:00

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

Submit your questions for our End of the Year Q&A using this form: https://forms.gle/2BDWts2RaKzRo3hL8

Find merch at the Common Descent Store! http://zazzle.com/common_descent

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/

100 Episodes: A Look Back

100 Episodes: A Look Back

November 22, 2020

We’ve released 100 episodes of the podcast! Plus, more than 50 side episodes, a handful of YouTube videos, some live shows … it’s been quite a journey. In this episode, we take some time to look back over our experience, to discuss some of our favorite aspects of the podcast, and above all, to thank our listeners.

Thank you. To everyone who listens to the podcast; everyone who supports us on Patreon; everyone who sends us requests, questions, comments, and feedback; everyone who follows us on social media or leaves a review on iTunes; everyone who comes to see us at DragonCon; everyone who tells their friends about us. This podcast wouldn’t exist without all of you, and we are so, so glad it exists.

Here’s to another 100 episodes.

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

Submit your questions for our End of the Year Q&A using this form: https://forms.gle/2BDWts2RaKzRo3hL8

Find merch at the Common Descent Store! http://zazzle.com/common_descent

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.

Episode 100 - the Origin of Life

Episode 100 - the Origin of Life

November 14, 2020

One hundred episodes is kind of a big deal, so we figured we’d pick a big deal kind of topic, and it doesn’t get much bigger than this.

As far as we can tell, all life on Earth is descended from a common ancestry – at some point, at least once, life originated on Earth. But when, where, and how? These are open questions that have been subject to lots of scientific and philosophical discussions and experiments. In this episode, we’ll touch on some of the biggest questions: What even is life? How old is life on Earth? What steps led to the first living things? Is Earth the only place this has happened?

In the news: dino bone disease, amphibian chameleons, ancient social mammals, and pterosaur diets.

Time markers:
Intro & Announcements: 00:00:00
News: 00:08:00
Main discussion, Part 1: 00:38:00
Main discussion, Part 2: 01:30:00
Patron questions: 02:26:30

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

Submit your questions for our End of the Year Q&A using this form: https://forms.gle/2BDWts2RaKzRo3hL8

Find merch at the Common Descent Store! http://zazzle.com/common_descent

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/

Play this podcast on Podbean App