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b'In our modern world, there are three major groups of mammals: placentals (that\\u2019s most of us), marsupials, and the rare and bizarre monotremes. Today\\u2019s monotremes \\u2013 that\\u2019s echidnas and platypuses \\u2013 are famous for their seemingly \\u201cun-mammalian\\u201d features: they lack external ears, they deliver milk without nipples, and they even lay eggs! This episode, we discuss what makes monotremes unique, the many questions still unanswered about their ancient history, and whether or not they are truly good representatives of early mammal evolution.\\nIn the news: weird mosasaur teeth, Tibetan sabertooths, marsupial growth, and giant pliosaurs.\\nTime markers:Intro & Announcements: 00:00:00News: 00:07:50Main discussion, Part 1: 00:38:00Main discussion, Part 2: 01:11:40Patron question: 02:01:10\\nCheck out our blog for bonus info and pictures:http://commondescentpodcast.com/\\nJoin us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast\\nWe\\u2019re an Audible Affiliate Partner! Use this link for a 30-day free trial to Audible: www.audibletrial.com/CommonDescent\\nOr make a one-time donation via PayPal: https://tinyurl.com/4c68u4hp\\nFind merch at the Common Descent Store! http://zazzle.com/common_descent\\nJoin the Common Descent Discord server! https://discord.gg/CwPBxdh9Ev\\nFollow 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/iTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2\\nYou 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\\nThe Intro and Outro music is \\u201cOn the Origin of Species\\u201d by Protodome.More music like this at http://ocremix.org.\\nMusical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0http://creativecommons.org/licenses/by/3.0/'