When Penguins Went From The Sky To The Sea

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Today, we think of penguins as small-ish, waddling, tuxedo-birds. But they evolved from a flying ancestor, were actual giants for millions of years, and some of them were even dressed a little more casually.

Thank you to these paleoartists for allowing us to use their wonderful penguin illustrations:
Ceri Thomas: http://alphynix.tumblr.com/
Stanton Fink: https://www.deviantart.com/avancna
Nobu Tamura: https://spinops.blogspot.com/
Julio Lacerda (cretaceous predator illustrations!): https://252mya.com/gallery/julio-lacerda

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

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References:
https://docs.google.com/document/d/1OkAc7KGG73szHF2ZF27TZQunqCrcaNd5HdDVi8hHJ80/edit?usp=sharing