Deinosuchus had

Deinosuchus had a secondary bony palate, which would have permitted it to breathe through its nostrils while the rest of the head remained submerged underwater.[6] The vertebrae were articulated in a procoelous manner, meaning that they had a concave hollow on the front end and a convex bulge on the rear; these would have fit together to produce a ball and socket joint.[7][8] The secondary palate and procoelous vertebrae are advanced features also found in modern eusuchian crocodilians.cams
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