Comment on Cotylorhynchus, a genus of late Permian synapsids. It's herbivorous and it's huge gut was possibly necessary to digest the nutrient-poor plant life it fed on.

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USSMojave@startrek.website ⁨1⁩ ⁨day⁩ ago

Turtle shells are already on the inside. The entire surface of their shells is skin!

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