Reptile Evolution
 
Tetrapoda
Ichthyostega
Reptilomorpha
Lepospondyli
 
Reptilia/Amniota
Gephyrostegus
 
Archosauromorpha
Basal Archosauromorpha
Protosynapsida
Synapsida
Protodiapsida
Diapsida
Terrestrial Younginiformes
Marine Younginiformes
Enaliosauria
Protorosauria
Archosauriformes
Archosauria
Dinosauria
 
Lepidosauromorpha
Basal Lepidosauromorpha
Cephalerpeton clade
Captorhinidae
Milleretta clade
Casea Diadectes clade
Turtle Pareiasaur clade
Lanthanosuchia
Owenettidae
Lepidosauriformes
Lepidosauria
Tritosauria
Fenestrasauria
Pterosauria
Squamata
 
 
Reptilia/Amniota
Silvanerpeton
Gephyostegus bohemicus
 
Archosauromorpha
Eldeceeon
Gephyrostegus watsoni
Solenodonsaurus
Chroniosaurus
Chroniosuchus
Casineria
Westlothiana
Brouffia
 
Protosynapsida
Paleothyris
Coelostegus
Hylonomus
Protorothyris
 
Synapsida
Elliotsmithia Aerosaurus
 
Protodiapsida
Orovenator
 

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