Seymouria
Limnoscelidae
Diadectidae
Synapsida
Mesosauridae
Eunotosaurus
Millerettidae
Eudibamus
Belebey
Nyctiphruretus
Bradysaurus
Pareiasuchus
Scutosaurus
Macroleter
Tokosaurus
Bashkyroleter_mesensis
Bashkyroleter_bashkyricus
Nycteroleter
Emeroleter
Procolophon
Owenetta
Barasaurus
Acleistorhinus
Lanthanosuchus
Captorhinidae
Paleothyris
Araeoscelidia
Younginiformes