Reptile Evolution
 
Tetrapoda
Basal Tetrapoda
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
 
 
Protodiapsida
Mycterosaurus
Heleosaurus
Mesenosaurus
Orovenator
Archaeovenator
Broomia
Erpetonyx
Milleropsis
 
Diapsida
Eudibamus
Aphelosaurus
Petrolacosaurus
Araeoscelis
 
Terrestrial Younginiformes
Spinoaequalis
Youngina SAM K 7710
Youngina BPI 375
Youngoides minor RC91
Youngina AMNH 5561
Youngoides UC1528
 
Marine Younginiformes
Galesphyrus
 

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