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