Amniota - Therapsida - Tritylodontidae

Parent taxon: Tritylodontidae according to M. Waldman and R. J. G. Savage 1972

Sister taxa: Bienotherium, Bienotheroides, Bocatherium, Chalepotherium, Dianzhongia, Dinnebitodon, Kayentatherium, Lufengia, Masitisitherium, Oligokyphus, Polistodon, Tritylodon, Tritylodontoides, Yuanotherium, Yunnanodon

Subtaxa: Stereognathus hebridicus, Stereognathus ooliticus

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Type: Stereognathus ooliticus

Ecology: