Fossil skull of Cynognathus crateronotus. Cynognathus is an extinct genus of large-bodied cynodont therapsid that lived in the Early and Middle Triassic. It is known from a single species, Cynognathus crateronotus. Cynognathus was a meter-long predator closely related to mammals and had an almost worldwide distribution. Fossils have so far been recovered from South Africa, South America, China and Antarctica.
Art illustration - Prehistoric Mammals - Cynognathus: ("dog jaw") is sort represented by a unique species of therapsid (mammal-like reptiles), who lived middle and late Triassic period (between 245 and 208 million years). It measured approximately 1 meter. Its fossils have been found in South Africa, Argentina, China and Antarctica.