Placodont
From Freepedia
Placodonts were a group of marine reptiles that lived during the Triassic period, becoming extinct at the end of the period. It is believed that they were related to the Sauropterygia, the group that includes Plesiosaurs. Placodonts were generally between 1-2m in length, with some of the largest measuring 3m long. In appearance, they resembled some of today's large bottom-feeding mammals such as walruses or dugongs, others looking more turtle-like due to large bony plates on their backs. They were also notable for their large, flat, often protruding teeth which they used to crush molluscs, which they hunted on the sea bed(another way in which they were similar to walruses). The first specimen was discovered in 1830, and they have since been discovered throughout Europe and the Middle East. Some genera include:
Oceans of Kansas Palaeontology Mike Everhart
