Edaphosaurus cruciger

Edaphosaurus_crucigerThis is Edaphosaurus cruciger. It had a smaller head than Edaphosaurus pogonias but it had taller spines. It probably had only one enemy (dimetrodon) who barely ever attacked it. Edaphosaurus cruciger probably used its sail as a bluffing mechanism, to scare away predators, a radiator, to warm and cool its body and a device tor attract a mate.

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