The Common Descent Podcast

Orchids are among the most diverse and widespread group of plants on Earth today, not to mention one of the most popular among plant enthusiasts. This episode, we discuss what makes orchids so unique and strange, as well as the many mysteries surrounding their evolution and deep history. As with all our plant episodes, Aly is on hand to tell us all about why orchids are so fascinating. Featuring special guest, Dr. Aly Baumgartner, our favorite paleobotanist! Follow Aly on Twitter or Instagram @paleolorax In the news: Permian gliders, social dinosaurs, amber crab, and snake diets. Time markers: Intro & Announcements: 00:00:00 News: 00:05:00 Main discussion, Part 1: 00:39:00 Main discussion, Part 2: 01:12:00 Patron question: 01:39:30 Check out our blog for bonus info and pictures: http://commondescentpodcast.wordpress.com/ Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast  Or make a one-time donation via PayPal: https://tinyurl.com/4c68u4hp Find merch at the Common Descent Store! http://zazzle.com/common_descent Follow 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=2 You 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 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 3.0 http://creativecommons.org/licenses/by/3.0/

Welcome ... to Spookulative Evolution. October is here, and that means it’s time for Spook-E! Each episode throughout this month, we’re choosing a famous monster and discussing how it – or something like it – might evolve under the rules of evolution and natural selection, pulling inspiration from organisms of the real world. This year’s theme: monster plants. This episode, we face a more modern monster, star of page and screen. Can we invoke natural processes to develop a plant that haunts humans and strikes with a deadly lash? Our creatures to create this time: triffids.  Featuring special guest, Dr. Aly Baumgartner, our favorite paleobotanist!  Follow Aly on Twitter or Instagram @paleolorax Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast  Or make a one-time donation via PayPal: https://tinyurl.com/4c68u4hp Find Spook-E merch at the Common Descent Store! http://zazzle.com/common_descent Follow 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=2 The Intro and Outro music is “On the Origin of Species” by Protodome.  More music like this at http://ocremix.org.

Welcome ... to Spookulative Evolution. October is here, and that means it’s time for Spook-E! Each episode throughout this month, we’re choosing a famous monster and discussing how it – or something like it – might evolve under the rules of evolution and natural selection, pulling inspiration from organisms of the real world. This year’s theme: monster plants. This episode, we evaluate a famous and deadly monster favored by healers and witches. How can we use nature’s toolkit to evolve a baby-shaped root with a fatal scream? Our creatures to create this time: mandrakes. Featuring special guest, Dr. Aly Baumgartner, our favorite paleobotanist! Follow Aly on Twitter or Instagram @paleolorax Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast  Or make a one-time donation via PayPal: https://tinyurl.com/4c68u4hp Find Spook-E merch at the Common Descent Store! http://zazzle.com/common_descent Follow 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=2 The Intro and Outro music is “On the Origin of Species” by Protodome. More music like this at http://ocremix.org.

An Earth covered in ice might sound far-fetched, but there’s reason to think it has actually happened in the past – more than once. In this episode, we examine the Snowball Earth hypothesis and the geologic evidence and climate models that back it up, as well as some of the major lingering questions: Just how snowy is the snowball? How could this start? How could it end? And how did life fare on a frozen planet? In the news: ancient tardigrades, meat-eating sloths, shark communities, and relict mangroves. Time markers: Intro & Announcements: 00:00:00 News: 00:04:30 Main discussion, Part 1: 00:32:30 Main discussion, Part 2: 01:02:00 Patron question: 01:44:00 Check out our blog for bonus info and pictures: http://commondescentpodcast.wordpress.com/ Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast  Or make a one-time donation via PayPal: https://tinyurl.com/4c68u4hp Find merch at the Common Descent Store! http://zazzle.com/common_descent Follow 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=2 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 3.0 http://creativecommons.org/licenses/by/3.0/

Welcome ... to Spookulative Evolution. October is here, and that means it’s time for Spook-E! Each episode throughout this month, we’re choosing a famous monster and discussing how it – or something like it – might evolve under the rules of evolution and natural selection, pulling inspiration from organisms of the real world. This year’s theme: monster plants. This episode, we ponder a familiar favorite of myths, media, and Middle Earth. What evolutionary path might result in a towering woody plant that walks and talks? Our creatures to create this time: animated trees. Featuring special guest, Dr. Aly Baumgartner, our favorite paleobotanist! Follow Aly on Twitter or Instagram @paleolorax Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast  Or make a one-time donation via PayPal: https://tinyurl.com/4c68u4hp Find Spook-E merch at the Common Descent Store! http://zazzle.com/common_descent Follow 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=2 The Intro and Outro music is “On the Origin of Species” by Protodome. More music like this at http://ocremix.org.

Welcome ... to Spookulative Evolution. October is here, and that means it’s time for Spook-E! Each episode throughout this month, we’re choosing a famous monster and discussing how it – or something like it – might evolve under the rules of evolution and natural selection, pulling inspiration from organisms of the real world. This year’s theme: monster plants. This episode, we consider a classic category of plants-turned-monsters. How might natural selection produce a predatory plant with a taste for humans? Our creatures to create this time: people-eating plants. Featuring special guest, Dr. Aly Baumgartner, our favorite paleobotanist! Follow Aly on Twitter or Instagram @paleolorax Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast  Or make a one-time donation via PayPal: https://tinyurl.com/4c68u4hp Find Spook-E merch at the Common Descent Store! http://zazzle.com/common_descent Follow 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=2 The Intro and Outro music is “On the Origin of Species” by Protodome. More music like this at http://ocremix.org.

Spiders are among the most diverse, successful, and famous living groups of invertebrates. Today, they’re a worldwide assortment of fascinating predators, and their scarce fossil record provides hints of a history over 300 million years old. In this episode, we discuss the diversity and evolution of spiders, their varied lifestyles, and their most versatile and famous tool, silk. In the news: snake evolution, giant penguins, early American humans, and spider parents. Time markers: Intro & Announcements: 00:00:00 News: 00:05:30 Main discussion, Part 1: 00:35:00 Main discussion, Part 2: 01:12:30 Patron question: 01:53:30 Check out our blog for bonus info and pictures: http://commondescentpodcast.wordpress.com/ Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast  Or make a one-time donation via PayPal: https://tinyurl.com/4c68u4hp Find merch at the Common Descent Store! http://zazzle.com/common_descent Follow 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=2 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 3.0 http://creativecommons.org/licenses/by/3.0/

The Earth is in motion beneath our feet. The shifting and grinding of the tectonic plates is responsible for the shape of our planet’s surface and – directly or indirectly – nearly all the activity that happens upon it. Plate tectonics has a deep and fascinating history, both as a force that has shaped the Earth for billions of years and as a surprisingly recent foundational scientific theory. In the news: shark teeth, Cambrian predators, Carnotaurus skin, and teratorns. Time markers: Intro & Announcements: 00:00:00 News: 00:05:30 Main discussion, Part 1: 00:29:30 Main discussion, Part 2: 01:16:30 Patron question: 01:57:00 Check out our blog for bonus info and pictures: http://commondescentpodcast.wordpress.com/ Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast  Or make a one-time donation via PayPal: https://tinyurl.com/4c68u4hp Find merch at the Common Descent Store! http://zazzle.com/common_descent Follow 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=2 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 3.0 http://creativecommons.org/licenses/by/3.0/

Nearly all animals have some form of nervous system, and this system is often monitored and regulated by a brain. We humans are particularly proud of our enormous brains, but these organs come in all shapes and sizes across the animal kingdom, past and present. In this episode, we discuss brain diversity, the sometimes roundabout ways we explore brains in the fossil record, and what we’ve come to learn about the evolution of brains. In the news: turtle embryo, frog-legged leaf beetle, early lizard cousin, and tyrannosaur brains. Time markers: Intro & Announcements: 00:00:00 News: 00:06:15 Main discussion, Part 1: 00:34:00 Main discussion, Part 2: 01:12:45 Patron question: 02:05:00 Check out our blog for bonus info and pictures: http://commondescentpodcast.wordpress.com/ Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast  Or, make a one-time donation via PayPal: https://tinyurl.com/4c68u4hp Find merch at the Common Descent Store! http://zazzle.com/common_descent Follow 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=2 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 3.0 http://creativecommons.org/licenses/by/3.0/

Ever since T. rex was first identified in 1905, tyrannosaurs have been among the most famous and well-studied dinosaurs of all time. Research, especially in the last few decades, has revealed incredible details of tyrannosaur evolution, lifestyles, and development. This episode, we take a tour through tyrannosaur history, envision what these predators were like in life, and touch on some of the most prominent tyrannosaur controversies, including their notorious popularity. In the news: venom evolution, mammoth roaming, Jurassic land-croc, and climate change. Time markers: Intro & Announcements: 00:00:00 News: 00:07:30 Main discussion, Part 1: 00:45:30 Main discussion, Part 2: 01:24:00 Patron question: 02:44:30 Check out our blog for bonus info and pictures: http://commondescentpodcast.wordpress.com/ Join us on Patreon to support the podcast and enjoy bonus content! https://www.patreon.com/commondescentpodcast  Or, make a one-time donation via PayPal: https://tinyurl.com/4c68u4hp Find merch at the Common Descent Store! http://zazzle.com/common_descent Follow 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=2 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 3.0 http://creativecommons.org/licenses/by/3.0/