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Cynognathus
''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.
==Taxonomy==
The genus ''Cynognathus'' (from Greek ''κυνόγναθος'', meaning "dog jaw") has been given several different names over the years. It has also been known as ''Cisteatecynodon'', ''Cynidiognathus'', ''Cynogomphius'', ''Karoomys'', ''Lycaenognathus'', ''Lycochampsa'' and ''Lycognathus''. ''Cynognathus'' is the only recognized member of family Cynognathidae. Opinions vary as to whether all remains belong to the same species.
Species-level synonyms of ''Cynognathus crateronotus'' include ''Cistecynodon parvus'', ''Cynidiognathus broomi'', ''Cynidiognathus longiceps'', ''Cynidiognathus merenskyi'', ''Cynognathus beeryi'', ''Cynognathus minor'', ''Cynognathus platyceps'', ''Cynogomphius berryi'', ''Karoomys browni'', ''Lycaenognathus platyceps'', ''Lycochampsa ferox'', ''Lycognathus ferox'', and ''Nythosaurus browni''.
The genera ''Karoomys'' and ''Cistecynodon'' are known only from tiny juveniles.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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