Dinosaur classification



Dinosaurs are divided into two orders, the Saurischia and the Ornithischia, on the basis of their hip structure.


 * Saurischia (from the Greek meaning "lizard hip") include all the theropods (bipedal carnivores) and sauropods (long-necked herbivores).
 * Ornithischia (from the Greek meaning "bird-hip") is the other dinosauria order, most of which were quadrupedal herbivores.



Order Ornithischia

 * Main Article: Ornithischia (Bird-hipped)

Suborder: Thyreophora (armored dinosaurs)
 * Infraorder: Ankylosauria
 * * Ankylosauridae
 * * Nodosauridae
 * * Scelidosauridae
 * Infraorder: Stegosauria
 * * Huayangosauridae
 * * Stegosauridae

Suborder Cerapoda:
 * Infraorder: Ceratopsia
 * * Ceratopsidae (horned dinosaurs)
 * * Chaoyangsauridae
 * * Psittacosauridae
 * * Neoceratopsia


 * Infraorder: Ornithopoda (bird-footed)
 * * Hypsilophodontidae
 * * Iguanodontidae
 * * Hadrosauridae (duck-billed dinosaurs)


 * Infraorder: Pachycephalosauria
 * * Pachycephalosauridae
 * * Goyocephala

Order Saurischia

 * Main Article: Saurischia (lizard-hipped)

Suborder Sauropodomorpha
 * Infraorder Sauropoda
 * Brachiosauridae
 * Camarasauridae
 * Cetiosauridae
 * Diplodocidae
 * Dicraeosauridae
 * Euhelopodidae
 * Nemegtosauridae
 * Omeisauridae
 * Rebbachisauridae
 * Titanosauridae
 * Vulcanodontidae

Suborder Theropoda
 * Coelophysidae
 * Elaphrosauridae
 * Ceratosauridae
 * Noasauridae
 * Abelisauridae
 * Spinosauridae
 * Allosauridae
 * Sinraptoridae
 * Carcharodontosauridae
 * Tyrannosauridae
 * Troodontidae
 * Microraptoria
 * Dromaeosauridae
 * Infraorder Prosauropoda