Reptile Evolution
 
Tetrapoda
Ichthyostega
Reptilomorpha
Lepospondyli
 
Reptilia/Amniota
Gephyostegus
 
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

 

 
 
Archosauromorpha
Solenodonsaurus
Chroniosaurus
Chroniosuchus
Casineria
Westlothiana
Brouffia
 
Protosynapsida
Paleothyris
Coelostegus
Hylonomus
Protorothyris
 
Synapsida
Elliotsmithia Aerosaurus
Varanops
Varanodon
Archaeothyris
Apsisaurus Varanosaurus
Ophiacodon
Stenocybus - Dicynodonts
Biarmosuchus - Therapsids
Haptodus
Edaphosaurus
Ianthasaurus
Echinerpeton
Secodontosaurus
Dimetrodon Sphenacodon
 
Protodiapsida
Orovenator
Archaeovenator
Mesenosaurus
Heleosaurus Mycterosaurus
Milleropsis Broomia
 

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