The Second Time Sponges Took Over The World

Video Description

Check out Crash Course TB here: https://youtu.be/7D-gxaie6UI?si=AchKeJt0O4bIs9PO Researchers have discovered a piece of a weird, but critical, time in the deep past…a time when the first-ever mass extinction may have turned Planet Earth into Sponge World. ***** PBS Member Stations rely on viewers like you. To support your local station, go to http://to.pbs.org/DonateEons ***** Eons is a production of Complexly for PBS Digital Studios. Super special thanks to the following Patreon patrons for helping make Eons possible: Kevin Lacson, Marco Narajos, Collin Dutrow, Pope John XII, Steven Kern, Aaditya Mehta, AllPizzasArePersonal, John H. Austin, Jr., Alex Hackman, Amanda Ward, Stephen Patterson, Karen Farrell, Trevor Long, Jason Rostoker, Jonathan Rust, Mary Tevington, Bart & Elke van Iersel - De Jong, Irene Wood, Derek Helling, Mark Talbott-Williams, Nomi Alchin, Duane Westhoff, Hillary Ryde-Collins, Yu Mei, Albert Folsom, Heathe Kyle Yeakley, Dan Caffee, Nick Ryhajlo, Jeff Graham If you'd like to support the channel, head over to http://patreon.com/eons and pledge for some cool rewards! Want to follow Eons elsewhere on the internet? Facebook - https://www.facebook.com/eonsshow Twitter - https://twitter.com/eonsshow Instagram - https://www.instagram.com/eonsshow/ #Eons #evolution #sponges References: https://docs.google.com/document/d/188LZat74Aw2Ty4QlMGHDMhcqLeAx2lzYnHVyXC8qgYM/edit?usp=sharing