Walrus

The eight – foot – long Placodus was also a Triassic reptile. Its stoutish body, short neck and tail and paddle like limbs resembled those of the modern walrus, a mammal. Like the walrus, it was a marine animal that dove down to the bottom in search of shellfish, which it crushed with its strong jaws and teeth. Although it lacked the canine tusks of the walrus, its front teeth were used as efficient nippers.