Tetrapoda
Ichthyostega
Reptilomorpha
Lepospondyli
 
Reptilia/Amniota
Gephyrostegus
 
Archosauromorpha
Basal Archosauromorpha
Protosynapsida
Synapsida
Protodiapsida
Diapsida
Terrestrial Younginiformes
Marine Younginiformes
Enaliosauria
Protorosauria
Archosauriformes
Euarchosauriformes
Archosauria
Dinosauria
 
Lepidosauromorpha
Urumqia clade
Cephalerpeton clade
Captorhinidae
Milleretta Limnoscelis clade
Bolosaurus Diadectes clade
Turtle Pareiasaur clade
Lanthanosuchia
Owenettidae
Lepidosauriformes
Lepidosauria
Tritosauria
Fenestrasauria • Pterosauria
Protosquamata
Squamata
 
 
Poposauridae
Turfanosuchus
Poposaurus and kin
 
Archosauria
Gracilisuchus
Saltopus
Scleromochlus
 
Crocodylomorpha
SMNS 12591
Terrestrisuchus
Litargosuchus
Erpetosuchus
SMNS 12352
Sphenosuchus
Saltoposuchus
Dibothrosuchus
Baurusuchus
Simosuchus
Caiman
Metriorhynchus
Hesperosuchus
Yonghesuchus
Dromicosuchus
Protosuchus
 
Protodinosauria
PVL 4597 basal dinosaur
Lewisuchus
Pseudhesperosuchus
Trialestes
 
Dinosauria
Herrerasaurus
 

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