Seymouriidae
Synapsida
Parareptilia
Captorhinidae
Araeoscelidia
Orovenator
Lanthanolania
Claudiosaurus
Rhynchocephalia
Squamata
Choristodera
Kuehneosauridae
Coelurosauravus
Tanystropheus
Macrocnemus
Prolacerta
Trilophosaurus
Rhynchosauria
Archosauriformes
Ichthyopterygia
Hupehsuchus
Helveticosaurus
Placodus
Pachypleurosaurs
Simosaurus
Pistosauridae
Askeptosaurus
Clarazia
Thalattosaurus
Youngina
Thadeosaurus
Tangasaurus
Acerosodontosaurus
Hovasaurus