†family Thrinaxodontidae Watson and Romer 1956 (cynodont)
Osteichthyes - Therapsida - Thrinaxodontidae
Parent taxon: Cynodontia according to B. Battail and M. V. Surkov 2000
See also Hopson and Kitching 1972
Sister taxa: Aelurosuchus, Charassognathidae, Chronoperatidae, Cromptodon, Cynognathidae, Cynognathoidea, Dromatherium, Dviniidae, Epicynodontia, Gaumia, Gomphodontidae, Hahnia, Hwanghocynodon, Kunminia, Madysauridae, Mammaliamorpha, Masitisitherium, Mitredon, Nythosaurus, Procynosuchidae, Riograndidae, Therioherpetidae, Tritylodontidae
Subtaxa: Nanocynodon Novocynodon
Ecology:
Distribution: found only at Bol'shoe Linovo, PIN 2415 (Permian of Russian Federation)