Episode 168 – Marine Crocs

The Common Descent Podcast

Common Descent

Science, Education, Earth Sciences, Natural Sciences, Science:natural Sciences

4.8 • 764 Ratings

🗓️ 25 June 2023

⏱️ 126 minutes

🔗️ Recording | iTunes | RSS

🧾️ Download transcript

Summary

Most crocodilians today can handle saltwater to some degree, but many of their ancient cousins were much more suited to a life at sea, including some of the most impressive ocean-going reptiles in history. In this episode, we’ll explore the many lineages of marine crocs that have evolved over the last 150 million years, and we’ll dive into the special adaptations that allowed them to take to the seas over and over again. Happy Croc Month! In the news: a dinosaur transition, tusked dolphins, bird flutes, and crocodile parthenogenesis Time markers:Intro & Announcements: 00:00:00News: 00:06:18Main discussion, Part 1: 00:41:55Main discussion, Part 2: 01:13:55Patron question: 01:53:50 Check out our blog for bonus info and pictures:http://commondescentpodcast.com/ Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast We’re an Audible Affiliate Partner! Use this link for a 30-day free trial to Audible: https://www.audibletrial.com/CommonDescent Or make a one-time donation via PayPal: https://tinyurl.com/4c68u4hp Find merch at the Common Descent Store! http://zazzle.com/common_descent Join the Common Descent Discord server! https://discord.gg/CwPBxdh9Ev Follow and Support us on:Twitter: https://twitter.com/CommonDescentPCFacebook: https://www.facebook.com/commondescentpodcastInstagram: https://www.instagram.com/commondescentpodcast/ YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduwPodBean: https://commondescentpodcast.podbean.com/ You can email us at commondescentpodcast(at)gmail.comOr send us physical mail at:The Common Descent Podcast1735 W State of Franklin Rd. Ste 5 #165Johnson City, TN 37604 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 3.0http://creativecommons.org/licenses/by/3.0/

Transcript

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0:00.0	You're listening to the Common Descent Podcast.
0:19.2	Hello, David. Hello, Will.
0:21.2	And hello listeners.
0:22.7	Welcome to episode 168 of the Common Descent podcast.
0:27.7	Today's episode, we are discussing Marine Crocs.
0:31.6	Hey, a Crocs episode.
0:32.6	Yeah, been a little while.
0:34.1	It sure has.
0:34.8	It's Croc Month.
0:36.0	It's Croc Month.
0:36.8	So we are doing our first
0:39.0	ever return to actual crocs. 166 episodes since our last Crocs episode. In this episode,
0:47.2	we're talking about marine crocs, various groups of crocs and crocodile cousins, crocodile morphs that have gone to sea.
0:59.3	Mm-hmm.
0:59.9	And so, as we know today, crocs are semi-aquatic, you know, very adapted for the water, but
1:06.3	most are associated with freshwater.
1:08.9	Yeah, they're not ocean-going.
1:10.3	But throughout history, there have been actually numerous groups that have gone to saltwater,
1:17.8	coastal, all the way out to deep open ocean.
1:21.5	So we will be discussing which groups this includes and what are some of the things we see them doing to survive in this
1:30.4	particular habitat and the unusually complex mystery of their evolutionary history and relationships
1:38.0	to one another. Yeah. Now, we are discussing this topic because it's just so cool. It's cool.
	...

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