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b'Taking teeth to the extreme! Tusks have evolved numerous times, particularly in mammals, and they\\u2019ve come in a striking array of shapes and sizes for a variety of uses. From the monstrously huge ivory tusks of mammoths to the modest yet effective tusks of fanged deer to the bizarre and perplexing tusks of babirusas and narwhals, in this episode we discuss trends, drivers, and mysteries in the evolution of tusks.\\nIn the news: razor-toothed mosasaurs, walk the dinosaur, sidewinder skin, and really old giant sloths.\\nTime markers: Intro & Announcements: 00:00:00News: 00:03:30Main discussion, Part 1: 00:38:00Main discussion, Part 2: 01:15:30Patron question: 01:54:30\\nCheck out our blog for bonus info and pictures:http://commondescentpodcast.wordpress.com/\\nFind merch at the Common Descent Store! http://zazzle.com/common_descent\\nFollow and Support us on: Patreon: https://www.patreon.com/commondescentpodcast Twitter: https://twitter.com/CommonDescentPCFacebook: https://www.facebook.com/commondescentpodcastInstagram: @commondescentpodcast PodBean: https://commondescentpodcast.podbean.com/ YouTube: https://www.youtube.com/channel/UCePRXHEnZmTGum2r1l2mduwiTunes: https://itunes.apple.com/us/podcast/the-common-descent-podcast/id1207586509?mt=2\\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/'