"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. the vertebrae were articulated in a procoelous manner, meaning 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. the secondary palate and procoelous vertebrae are advanced features also found in modern eusuchian crocodilians.