Ancestor

Captorhinidae

Araeoscelidia

Hovasaurus

Youngina

Claudiosaurus

Prolacertiformes

Archosauriformes

Trilophosaurus

Rhynchosauria

Kuehneosauridae

Squamata

Rhynchocephalia

Odontochelys

Testudines

Ichthyopterygia

Thalattosauria

Helveticosaurus

Hanosaurus

Eusaurosphargis

Sanchiaosaurus_dengi

Kwangsisaurus_orientalis

Chinchenia_sungi

Sinosaurosphargis

Largocephalosaurus_polycarpon

Largocephalosaurus_qianensis

Palatodonta

Paraplacodus

PlacodUs

Cyamodus

Psephoderma

Wumengwaurus

Diandongosaurus

Corosaurus

Cymatosaurus

Pistosaurus

Yunguisaurus

Plesiosaurus

Augustasaurus

Qianxisaurus

Anarosaurus_dash_Dactylosaurus

Serpianosaurus_dash_Newticosaurus

Majiashanosaurus

Dianopachysaurus

Dawazisaurus

Keichousaurus

Simosaurus_gaillardoti

Germanosaurus

Lariosaurus

Nothosaurus