despite its large size, the overall appearance of "deinosuchus" was not considerably different from that of modern crocodilians. "deinosuchus" had an alligator-like, broad snout, with a slightly bulbous tip. each premaxilla contained four teeth, with the pair nearest to the tip of the snout being significantly smaller than the other two. each maxilla (the main tooth-bearing bone in the upper jaw) contained 21 or 22 teeth. the tooth count for each dentary (tooth-bearing bone in the lower jaw) was at least 22. all the teeth were very thick and robust; those close to the rear of the jaws were short, rounded, and blunt. they appear to have been adapted for crushing, rather than piercing. when the mouth was closed, only the fourth tooth of the lower jaw would have been visible.