Episode 72 - Plesiosaurs

The Common Descent Podcast

Common Descent

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

4.8 • 764 Ratings

🗓️ 20 October 2019

⏱️ 103 minutes

🔗️ Recording | iTunes | RSS

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Summary

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, and mold pigs! Time markers: Intro & Announcements: 00:00:00News: 00:04:00Main discussion, Part 1: 00:34:00Main discussion, Part 2: 01:03:00Patron question: 01:35:30 Check out our blog for bonus info and pictures:http://commondescentpodcast.wordpress.com/ The Common Descent Store is open! Get merch! http://zazzle.com/common_descent Follow and Support us on: Patreon: https://www.patreon.com/commondescentpodcast Twitter: https://twitter.com/CommonDescentPCFacebook: https://www.facebook.com/commondescentpodcast/PodBean: https://commondescentpodcast.podbean.com/ iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2YouTube: 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 3.0http://creativecommons.org/licenses/by/3.0/

Transcript

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0:00.0	You're listening to the Common Descent Podcast.
0:19.0	Hello, David. Hello, Will.
0:21.8	And hello, listeners.
0:23.6	Welcome to episode 72 of the Common to Sim Podcast.
0:27.7	Welcome back.
0:28.7	Today's episode, we're going back to the water.
0:31.5	And we are going to talk about some of the most iconic of ancient sea predators, the Pleasiosaurus.
0:38.9	Last episode, we talked about a place that Pleasiosaurus lived.
0:42.2	Yes, we did.
0:43.1	Now, let's zoom on in.
0:44.7	Yeah, so we're going to discuss this ancient group of marine reptiles.
0:48.7	It's extremely diverse, so we're going to go over some of the examples,
0:52.1	talk about what features made this group unique,
0:55.2	what features made them super weird, and what we do and don't know about them.
1:01.4	But Will, what's a pleasaur?
1:03.0	So plesiosaurus are those paddle-finned marine reptiles that you always see drawn in dinosaur books whenever they're talking
1:12.7	about what's going on in the ocean.
1:14.5	Usually you'll see the versions with the long, snaky necks.
1:17.5	Exactly, but that does not represent all pleasosaurs.
1:22.0	But the paddle flippers do.
1:23.1	Yes.
1:24.1	So those big rowboat paddle arms and legs that you see, that's a pleasaur thing.
	...

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