Parent taxon: Dvinosauria according to R. R. Schoch and A. R. Milner 2014
See also Warren 1998 and Yates and Warren 2000
Sister taxa: Dawsonerpeton, Erpetosaurus, Eugyrinus, Laidleriidae, Neldasaurus, Saurerpetontidae, Timonya, Trimerorhachidae, Trimerorhachoidea, Trypanognathus
Subtaxa: Bermanerpeton Dvinosauridae Eobrachyopidae Tupilakosauridae
Ecology: amphibious carnivore
Distribution:
• Triassic of Greenland (2 collections), Poland (1), the Russian Federation (21), South Africa (1)
• Severodvinian of the Russian Federation (14)
• Tatarian of the Russian Federation (1)
• Permian of France (1), the Russian Federation (7), United States (9: Kansas, Nebraska, Texas)
• Virgilian of United States (1: New Mexico)
• Desmoinesian of United States (2: Ohio, Pennsylvania)
• Carboniferous of United States (3: Illinois, Ohio, Pennsylvania)
Total: 63 collections including 73 occurrences