Reptile Evolution
 
Tetrapoda
Basal Tetrapoda
Reptilomorpha
Lepospondyli
 
Reptilia/Amniota
Gephyrostegus
 
Archosauromorpha
Basal Archosauromorpha
Protosynapsida
Synapsida
Protodiapsida
Mammalia
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
 
 
Marine Younginiformes
Galesphyrus
 
Enaliosauria
Anarosaurus
 
Mesosauria
Stereosternum
 
Ichthyopterygia
Wumengosaurus
Hupehsuchus
Thaisaurus • Xinminosaurus
Utatsusaurus
Shastasaurus
Grippia
Mikadocephalus
Parvinatator
Chaohusaurus • Besanosaurus
Qianichthyosaurus
Phalarodon
Mixosaurus
Cymbospondylus
'Shonisaurus' sikanniensis
Guanlingsaurus
Guizhouichthyosaurus
'Cymbospondylus' buchseri
Shonisaurus popularis
Ichthyosaurus
Ophthalmosaurus
Eurhinosaurus
 
Thalattosauriformes
Serpianosaurus
 
Sauropterygia
Pachypleurosaurus
 
Placodontia
Paraplacodus
 

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