Tetrapoda
Ichthyostega
Reptilomorpha
Lepospondyli
 
Reptilia/Amniota
Gephyrostegus
 
Lepidosauromorpha
Urumqia clade
Cephalerpeton clade
Captorhinidae
Milleretta clade
Casea Diadectes clade
Turtle Pareiasaur clade
Lanthanosuchia
Owenettidae
Lepidosauriformes
Lepidosauria
Tritosauria
Fenestrasauria • Pterosauria
Squamata
 
Archosauromorpha
Basal Archosauromorpha
Protosynapsida
Synapsida
Protodiapsida
Diapsida
Youngininformes
Enaliosauria
Protorosauria
Archosauriformes
Archosauria
Dinosauria
 
 
Scleroglossa
Liushusaurus
 
Anguimorpha
Acanthodactylus
 
Varanoidea
Yabeinosaurus
Bahndwivici
Estesia
Varanus
Aigialosaurus
Ardeosaurus
Adriosaurus
Pachyrhachis
 
Helodermatidae
Cryptolacerta
Heloderma
Lanthanotus
Cylindrophis
Uropeltis
Anomochilus
Leptotyphlops
 

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