Sauropsid

Scutosaurus

Sauropsids (Sauropsida) (meaning: "lizard faces") are all animals more closely related to birds, and the traditional "reptiles" than to other animals like mammals. If the word reptile is used for a natural group of animals (that it includes birds) it would be synonym to sauropsid.

Sauropsid groups

• Parareptilia (extinct early sauropsids)
  • Pareiasauria (armored plant eaters: Scutosaurus etc.)
  • Mesosauria (mesosaurs)
  • Millerosauria
  • Procolophonomorpha
• Eureptilia
  • Captorhinidae
  • Romeriida
    • Protorothyrididae
    • Diapsida (diapsids)
      • Araeoscelidia
      • Ichthyosauria (ichthyosaurs, fish shaped sea reptiles)
      • Weigeltisauridae (gliding early reptiles: Coelurosauravus etc.)
      • Testudines (turtles)
      • Archosauromorpha
        • Dinosauria (dinosaurs)
          • Aves (birds)
        • Pterosauria (pterosaurs)
        • Crocodilia (crocodilians)
      • Lepidosauromorpha
        • Lepidosauria (lizards etc.)
        • Sauropterygia (plesiosaurs etc.)