Reptile Evolution
 
Tetrapoda
Ichthyostega
Reptilomorpha
Lepospondyli
 
Reptilia/Amniota
Gephyrostegus
 
Archosauromorpha
Basal Archosauromorpha
Protosynapsida
Synapsida
Mammalia
Protodiapsida
Diapsida
Terrestrial Younginiformes
Marine Younginiformes
Enaliosauria
Protorosauria
Archosauriformes
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
 
 
Synapsida
Ophiacodon
 
Therapsida
Basal Therapsida
 
Protodicynodontia
Dromasauria
Microurania
Venjukovia
Dicynodontia
 
Protomamamalia
Biarmosuchia
Dinocephalia
Anteosauria
Tapinocephalia
 
Theriodontia
Gorgonopsia Therocephalia
 
Cynodontia
Procynosuchus
Thrinaxodon
Chiniquodon
Pachygenelus
 
Mammalia
Megazostrodon
 

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