Viviparity is the reproductive style where embryos develop inside a parent’s body instead of inside an egg the parent lays. It’s a very familiar habit to us placental mammals, but it’s also an extremely widespread and diverse feature of life. Seriously, it’s ridiculous just how many times viviparity has evolved and just how many different ways species have found to be viviparous. In this episode we’ll answer such questions as: How and why does viviparity evolve? What features vary from one viviparous group to the next? And how do we identify viviparous animals in the fossil record?
In the news: army ants, oldest lizards, beaver families, and swimming dinosaurs.
Time markers:
Intro & Announcements: 00:00:00
News: 00:04:30
Main discussion, Part 1: 00:33:30
Main discussion, Part 2: 01:13:30
Patron question: 01:46:30
Check out our blog for bonus info and pictures:
http://commondescentpodcast.wordpress.com/
The 2022 End of the Year Q&A Form is LIVE! Submit your question now!
https://forms.gle/GTgew75GmVxAKejt6
Follow this link for a 30-day free trial to Audible!
www.audibletrial.com/CommonDescent
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
Join the Common Descent Discord server! https://discord.gg/CwPBxdh9Ev
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/
Episode 110 - Mazon Creek Fossil Beds
Episode 109 - Hyenas
Episode 108 - Penguins
Episode 107 – Tusks
Episode 106 - Franz Nopcsa
Episode 105 - Carnivorous Plants
Episode 104 - Pinnipeds
End of the Year Q&A 2020
Episode 103 – The Paleocene-Eocene Thermal Maximum
Episode 102 - Parasites
Episode 101 - Sauropods
100 Episodes: A Look Back
Episode 100 - the Origin of Life
Episode 99 - Evolution of Insects
Spook-E - the Sirens
Spook-E - the Leviathan
Episode 98 - Species and Speciation
Spook-E - Sea Serpents
Spook-E - the Kraken
Episode 97 - Venom and Poison
Create your
podcast in
minutes
It is Free
Sasquatch Chronicles
Radiolab
The Confessionals
Sasquatch Odyssey
Science Friday