Think nesting dolls, but fossilized animals. ***** PBS Member Stations rely on viewers like you. To support your local station, go to http://to.pbs.org/DonateEons ***** Produced by Complexly for PBS Digital Studios Super special thanks to the following Patreon patrons for helping make Eons possible: 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, Swad Swadlo, Yu Mei, Albert Folsom, Oscar Amoros Huguet, Heathe Kyle Yeakley, Dan Caffee, Nick Ryhajlo, Sean Dennis, 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 #fossils References: https://link.springer.com/article/10.1007/s12549-016-0244-1 https://www.si.edu/stories/thanksgiving-try-fossil-turducken https://royalsocietypublishing.org/doi/10.1098/rspb.2007.1170#:~:text=Right%3A%20skull%20of%20Archegosaurus%20decheni