When Ichthyosaurs Led a Revolution in the Seas

The marine reptiles Ichthyosaurs arose after The Great Dying, which wiped out at least 90 percent of life in the oceans, changing the seas forever and triggering a new evolutionary arms race between predator and prey.

Thank you to these paleoartists for allowing us to use their wonderful illustrations:
Julio Lacerda: https://252mya.com/gallery/julio-lacerda
Ceri Thomas: http://alphynix.tumblr.com/
Dmitry Bogdanov: https://www.deviantart.com/dibgd
Nobu Tamura: https://spinops.blogspot.com/
Franz Anthony:https://252mya.com/gallery/franz-anthony
Nikolay Zverkov: https://www.deviantart.com/ngzver

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References:
https://docs.google.com/document/d/1VIHx9s6bjXg-LCbDoV4s4VOMguipItkbQXgK_ZwVSCk/edit