Seymouriidae
Synapsida
Parareptilia
Captorhinidae
Araeoscelidia
Apsisaurus
Claudiosaurus
Younginiformes
Choristodera
Testudines
Rhynchocephalia
Squamata
Helveticosaurus
Placodus
Pachypleurosaurs
Simosaurus
Pistosauridae
Tanystropheus
Macrocnemus
Prolacerta
Trilophosaurus
Rhynchosauria
Archosauriformes
Askeptosaurus
Clarazia
Thalattosaurus
Ichthyopterygia
Hupehsuchus
Coelurosauravus
Kuehneosauridae
Drepanosauridae
Sophineta
Palaeagama
Saurosternon