Psephoderma

Psephoderma (meaning "pebbly skin", from the Ancient Greek psepho (ψῆφος), "pebbly", and derma (δέρμα), "skin") is a genus of placodonts very similar to the related genera Placochelys and Cyamodus. Psephoderma had a long, narrow rostrum, which was the main difference between its skull and those of its relatives.