Seymouria
Limnoscelidae
Diadectidae
Synapsida
Captorhinidae
Paleothyris
Araeoscelidia
Younginiformes
Mesosauridae
Eunotosaurus
Millerettidae
Microleter
Australothyris
Nyctiphruretus
Macroleter
Bashkyroleter_mesensis
Bashkyroleter_bashkyricus
Nycteroleter
Emeroleter
Rhipaeosaurus
Bradysaurus
Pareiasuchus
Scutosaurus
Procolophon
Owenetta
Barasaurus
Eudibamus
Belebey
Feeserpeton
Lanthanosuchus
Acleistorhinus
Colobomycter
Delorhynchus_new_species