†family Chthonosauridae Tatarinov 1974 (therapsid)
Osteichthyes - Therocephalia - Chthonosauridae
Parent taxon: Eutherocephalia according to A. K. Huttenlocker and R. M. H. Smith 2017
See also Tatarinov 2008
Sister taxa: Akidnognathidae, Baurioidea, Caodeyao, Dalongkoua, Perplexisauroidea, Scaloposaurida, Whaitsioidea
Subtaxa: Chthonosaurus Ichibengops
Ecology: carnivore
Distribution:
• Permian of the Russian Federation (2 collections), Zambia (1)
Total: 3 collections each including a single occurrence