Episode 174 - The Mesozoic Marine Revolution

The Common Descent Podcast

Common Descent

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

4.8 • 764 Ratings

🗓️ 17 September 2023

⏱️ 119 minutes

🔗️ Recording | iTunes | RSS

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Summary

Earth’s oceans change over time, not just in their size and shape, but also in the very dynamics of their ecosystems. The stage was set for modern ocean ecosystems by an event called the Mesozoic Marine Revolution, a dramatic restructuring of ecology in shallow seas that saw the rise of many forms of active predatory lifestyles. This episode, we discuss the fossil evidence, the major players, and the ongoing and sometimes contentious research into this crucial period. In the news: early arthropods, early apes, prehistoric ravens, and long-necked marine reptiles. Time markers:Intro & Announcements: 00:00:00News: 00:07:00Main discussion, Part 1: 00:35:00Main discussion, Part 2: 01:18:35Patron question: 01:51:00 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 Got a topic you want to hear about? Submit your episode request here:https://commondescentpodcast.com/request-a-topic/ 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.
0:19.0	Hello, David. Hello, Will.
0:21.4	And hello listeners.
0:23.0	Welcome to episode 174 of the Common Descent Podcast.
0:28.0	This episode, we are talking about the Mesozoic Marine Revolution.
0:31.7	I've heard of that.
0:32.8	Yeah, I know we've mentioned it before.
0:34.7	I can't remember which episode it was that it came up notably one time.
0:37.8	It's come up in the news.
0:38.9	I think it might have come up in the Reefs episode.
0:40.5	That's what it was.
0:41.2	That might have been the one.
0:42.2	That's what it was.
0:43.3	This is a very, very heavily studied event that takes place, as the name suggests, heavily in the Mesozoic, when the marine communities, mainly in shallow water areas,
0:56.3	was revolutionized and basically set up to be what we recognize it as today.
1:03.1	Yeah, this is a recurring theme on the podcast, especially when we do sort of the big picture
1:07.7	throughout geologic time discussions. Like the last episode, Urbivory had some of this in it.
1:13.7	There are times throughout Earth history and throughout the evolution of life on Earth
1:18.7	where something happens that allows for ecosystems as we know it.
1:24.4	Yes, exactly, where some big chunk of what we find familiar was established.
1:29.2	Yes.
1:29.9	This is one of the biggest ones for marine communities, at least shallow water marine communities.
	...

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