Tetrapoda
Ichthyostega
Reptilomorpha
Lepospondyli
 
Reptilia/Amniota
Gephyrostegus
 
Archosauromorpha
Basal Archosauromorpha
Protosynapsida
Synapsida
Protodiapsida
Diapsida
Younginiformes
Enaliosauria
Protorosauria
Archosauriformes
Archosauria
Dinosauria
 
Lepidosauromorpha
Urumqia clade
Cephalerpeton clade
Captorhinidae
Milleretta clade
Casea Diadectes clade
Turtle Pareiasaur clade
Lanthanosuchia
Owenettidae
Lepidosauriformes
Lepidosauria
Tritosauria
Fenestrasauria
Pterosauria
Squamata
 
 
Poposauridae
Turfanosuchus
Poposaurus
 
Archosauria
Crocodylomorpha
SMNS 12591 basal croc
Gracilisuchus
Saltopus
Scleromochlus
Saltoposuchus
Terrestrisuchus
Erpetosuchus
Sphenosuchus
SMNS 12352
Caiman
Hesperosuchus
Yonghesuchus
Dromicosuchus
Protosuchus
 
Dinosauria
Pseudhesperosuchus
PVL 4597 basal dinosaur
Trialestes
Herrerasaurus
 

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