†family Dviniidae Tatarinov 1968 (cynodont)
Osteichthyes - Therapsida - Dviniidae
Parent taxon: Cynodontia according to B. Battail and M. V. Surkov 2000
See also Carroll 1988, Hopson and Kitching 1972, Kemp 1982 and Tatarinov 2008
Sister taxa: Aelurosuchus, Charassognathidae, Chronoperatidae, Cromptodon, Cynognathidae, Cynognathoidea, Dromatherium, Epicynodontia, Gaumia, Gomphodontidae, Hahnia, Hwanghocynodon, Kunminia, Madysauridae, Mammaliamorpha, Masitisitherium, Mitredon, Nythosaurus, Procynosuchidae, Riograndidae, Therioherpetidae, Thrinaxodontidae
Subtaxa: Dvinia
Ecology:
Distribution: found only at Sokolki locality, PIN 2005 (Permian of Russian Federation)