From ToyAnimalWiki
Jump to: navigation, search
Diapsids ("two arches") are a group of tetrapods that developed two holes (temporal fenestra) in each side of their skulls, about 300 million years ago during the late Carboniferous period. Living diapsids are extremely diverse, and include all crocodiles, lizards, snakes, tuataras, and birds. Although some diapsids have lost either one hole (lizards), or both holes (snakes), or have a heavily restructured skull (modern birds), they are still classified as diapsids based on their ancestry.

For more information, visit the Wikipedia entry

Get back to Animalia

Aetosauria.JPG†Aetosaurs Archosauromorpha Arizonasaurus.jpg†Arizonasaurus Aves.jpgBirds
Champsosaurus.JPG†Champsosaurus "True" crocodiles.jpgCrocodylomorpha Dinosauria.jpgDinosauria Euparkeria.jpg†Euparkeria
Ichthyosaurs.jpg†Ichthyosaurs Lepidosauromorpha Lizards Mosasauridae.jpg†Mosasaurs
Coelurosauravus 1.jpgNeodiapsida Ornithosuchus.jpg†Ornithosuchus Phytosauria.jpg†Phytosaurs Plesiosaurs.jpg†Plesiosaurs
Prestosuchus Postosuchus.jpg†Postosuchus Proterosuchus.JPG† Proterosuchids Protochirotherium.JPG†Protochirotherium
Protorosauria.JPG†Protorosaurs Pterosauria.jpg †Pterosaurs Sauropterygia Snakes.jpgSnakes
Rhynchocephalia.jpg Tuataras