Pareiasaur

Pareiasaurs are a group of anapsid reptiles classified in the family Pareiasauridae and the larger clade Pareiasauria. They were large herbivores that flourished during the Permian period. Pareiasaurs ranged in size from 60 to 300 centimetres (2.0 to 9.8 ft) long, and may have weighed up to 600 kilograms (1,300 lb). They were stocky, with short tails, small heads, robust limbs, and broad feet. Pareiasaurs were protected by bony scutes called osteoderms that set into the skin. Their heavy skulls were ornamented with multiple knobs and ridges.