The Paleozoic Era was home to many strange and fascinating extinct groups, and among the most eye-catching of these were the eurypterids. Colloquially called “sea scorpions,” these carnivorous aquatic arthropods came in many forms for many habitats and are now known from many amazing fossils. In this episode, we discuss what makes eurypterids distinct from similar organisms, what we know about their lifestyles, and the many ways they continue to surprise and confuse us.In the news: Brazilian crocs, injured cats, breeding ichthyosaurs, and mammal-munching dinos.Time markers: Intro & Announcements: News: Main discussion, Part 1: Main discussion, Part 2: Patron question: 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 Follow this link for a 30-day free trial to Audible! www.audibletrial.com/CommonDescentOr make a one-time donation via PayPal: https://tinyurl.com/4c68u4hpFind merch at the Common Descent Store! http://zazzle.com/common_descentJoin the Common Descent Discord server! https://discord.gg/CwPBxdh9EvFollow and Support us on: Twitter: https://twitter.com/CommonDescentPC Facebook: https://www.facebook.com/commondescentpodcast Instagram: @commondescentpodcast YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduw PodBean: https://commondescentpodcast.podbean.com/ iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2You can email us at commondescentpodcast(at)gmail.com Or send us physical mail at: The Common Descent Podcast 1735 W State of Franklin Rd. Ste 5 #165 Johnson City, TN 37604The 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/