Seymouriidae

Synapsida

Parareptilia

Captorhinidae

Araeoscelidia

Orovenator

Lanthanolania

Tangasaurus

Thadeosaurus

Youngina

Hovasaurus

Acerosodontosaurus

Claudiosaurus

Askeptosaurus

Thalattosaurus

Clarazia

Wumengosaurus

Utatsusaurus

Chaohusaurus

Hupehsuchus

Nanchangosaurus

Sophineta

Coelurosauravus

Choristodera

Trilophosaurus

Archosauriformes

Rhynchosauria

Prolacerta

Macrocnemus

Tanystropheus

Helveticosaurus

Pamelina

Kuehneosauridae

Squamata

Rhynchocephalia

Sinosaurosphargis

Largocephalosaurus

Placodus

Pachypleurosaurs

Pistosauridae

Simosaurus