Seymouriidae

Synapsida

Parareptilia

Captorhinidae

Araeoscelidia

Orovenator

Lanthanolania

Tangasaurus

Thadeosaurus

Youngina

Hovasaurus

Acerosodontosaurus

Claudiosaurus

Askeptosaurus

Thalattosaurus

Clarazia

Wumengosaurus

Utatsusaurus

Chaohusaurus

Hupehsuchus

Nanchangosaurus

Helveticosaurus

Sophineta

Coelurosauravus

Sinosaurosphargis

Largocephalosaurus

Placodus

Pachypleurosaurs

Pistosauridae

Simosaurus

Pamelina

Kuehneosauridae

Squamata

Rhynchocephalia

Elachistosuchus

Choristodera

Trilophosaurus

Archosauriformes

Rhynchosauria

Prolacerta

Macrocnemus

Tanystropheus