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
 
 
Marine Younginiformes
Galesphyrus
 
Enaliosauria
Anarosaurus
 
Mesosauria
Stereosternum
 
Ichthyopterygia
Wumengosaurus
Thaisaurus • Xinminosaurus
Shastasaurus
Hupehsuchids
Utatsusaurus
Grippia
Mikadocephalus
Parvinatator
Chaohusaurus • Besanosaurus
Qianichthyosaurus
Phalarodon
Guizhouichthyosaurus
'Cymbospondylus' buchseri
Shonisaurus popularis
Ophthalmosaurus
Ichthyosaurus
Eurhinosaurus
Mixosaurus
Cymbospondylus
Guanlingsaurus
'Shonisaurus' sikanniensis
 
Thalattosauriformes
Serpianosaurus
 
Sauropterygia
Pachypleurosaurus
 
Placodontia
Paraplacodus
 

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