Limnoscelidae
Diadectidae
Synapsida
Captorhinidae
Palaeothyris
Younginiformes
Araeoscelidia
Mesosauridae
Millerettidae
Eunotosaurus
Lanthanosuchidae
Acleistorhinus
Belebey
Eudibamus
Macroleter
Procolophonidae
Pareiasauria