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MrPlow [soylentnews.org] writes:

Submitted via IRC for takyon

There are a couple of key features that make a turtle a turtle: its shell, for one, but also its toothless beak. A newly-discovered fossil turtle that lived 228 million years ago is shedding light on how modern turtles developed these traits. It had a beak, but while its body was Frisbee-shaped, its wide ribs hadn't grown to form a shell like we see in turtles today.

Source: https://www.sciencedaily.com/releases/2018/08/180822131011.htm [sciencedaily.com]

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