How the Turtle Got Its Shell

Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/DonateEONS

Where did turtles come from? And how did the they get their shells? The answers to these questions would eventually cause scientists to rethink the entire history of reptile evolution.

Thanks as always to Nobumichi Tamura for allowing us to use his wonderful paleoart : http://spinops.blogspot.com/ Additionally, a big thank you to Tyler Lyson, Luke Norton, Andrey Atuchin, and Gaberiel Bever for their images of Eunotosaurus.

Produced in collaboration with PBS Digital Studios: http://youtube.com/pbsdigitalstudios

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/

References:
https://books.google.com/books?id=foxPAQAAMAAJ&pg=PA538
https://books.google.com/books?id=AR3BDA3QJNUC&pg=PA8 https://www.researchgate.net/publication/227840230_Development_of_the_turtle_carapace_Implications_for_the_evolution_of_a_novel_bauplan
http://www.mrfdigs.com/publications/2009_lyson-gilbert-loggerheads.pdf
http://www.jstor.org/stable/221677
https://www.nature.com/articles/nature07533
https://www.nature.com/articles/456450a
http://rspb.royalsocietypublishing.org/content/276/1656/507
https://www.newscientist.com/article/dn14892-fossil-reveals-how-the-turtle-got-its-shell/
http://phenomena.nationalgeographic.com/2009/07/09/how-the-turtle-got-its-shell-through-skeletal-shifts-and-muscular-origami/
http://onlinelibrary.wiley.com/doi/10.1111/jeb.12268/abstract
https://www.nature.com/articles/nature14472
https://www.npr.org/sections/thetwo-way/2015/06/24/416657576/how-the-turtle-got-its-shell
http://www.cell.com/current-biology/fulltext/S0960-9822(16)30478-X
https://www.theatlantic.com/science/archive/2016/07/the-turtle-shell-first-evolved-for-digging-not-defence/491087/
https://academic.oup.com/jmammal/article-abstract/51/2/288/832941?redirectedFrom=fulltext
http://www.journals.uchicago.edu/doi/abs/10.1086/395600
https://books.google.com/books?id=8rXIDQAAQBAJ&pg=PA43
https://www.sciencedirect.com/science/article/pii/S0024408297900807
https://www.jstor.org/stable/3883561

Видео How the Turtle Got Its Shell канала PBS Eons