†subfamily Kotlassiinae Romer 1934 (tetrapod)
Osteichthyes - Seymouriamorpha - Kotlassidae
Parent taxon: Kotlassiidae according to V. V. Bulanov 2020
See also Bulanov 2003
Sister taxon: Leptorophinae
Ecology:
Distribution:
• Severodvinian of the Russian Federation (20 collections)
• Permian of the Russian Federation (2)
Total: 22 collections including 25 occurrences