Seymouria
Limnoscelidae
Diadectidae
Synapsida
Mesosauridae
Eunotosaurus_africanus
Millerettidae
Australothyris_smithi
Microleter_mckinzieorum
Eudibamus_cursorius
Belebey_vegrandis
Nyctiphruretus_acudens
Bradysaurus
Pareiasuchus
Scutosaurus_karpinskii
Macroleter_poezicus
Tokosaurus_perforatus
Bashkyroleter_bashkyricus
Nycteroleter_ineptus
Bashkyroleter_mesensis
Emeroleter_levis
Procolophon_trigoniceps
Owenetta
Barasaurus
Acleistorhinus_pteroticus
Lanthanosuchus_watsoni
Captorhinidae
Paleothyris
Araeoscelidia
Younginiformes