UT Austin Turtle Pond

https://www.sciencemag.org/news/2020/02/battle-scarred-fossils-suggest-giant-turtles-fought-each-other-and-crocodiles-three

Battle-scarred fossils suggest giant turtles fought each other—and crocodiles three times their size New specimens reveal ancient giants once ranged across South America

https://www.ted.com/talks/judy_cebra_thomas_how_turtle_shells_evolved_twice?language=en

How turtle shells evolved... twice Modern turtle shells are almost as diverse as the turtles themselves. Sea turtles have flatter, lighter shells for gliding through the water. Land-dwelling tortoises have domed shells that can slip free of predators' jaws. Leatherback turtles have shells without the ring of bone around the edge. So....

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