Bird hips
Ornithischia was one of the two extinct clades of dinosaurs, whose representatives were mainly herbivores and had pelvises similar to those of birds. However, birds evolved from lizards, another group of dinosaurs, and therefore do not belong to birds.
Classification
Classification of bird hips according to Benton (2004):
Sect ORNITHISCHIA
family Pisanosauridae
family Fabrosauridae
suborder Thyreophora - (armored dinosaurs)
family Scelidosauridae
suborder Stegosauria
suborder Ankylosaurus
suborder Cerapoda
family Heterodontosauridae
suborder Ornithopoda
family Hypsilophodontidae*
Iguanodontia
family Hadrosauridae - (duck-like dinosaurs)
suborder Pachycephalosauria
suborder Ceratopsia - (horned dinosaurs) Classification according to Thomas R. Holtz, Jr. (2011):
Ornithischia
Eocursor
Fabrosaurus
Pisanosaurus
Taveirosaurus
Trimucrodon
Heterodontosauridae
Thyreophora
Stegosaurus
Huayangosauridae
Stegosauridae
Ankylosaur
Nodosauridae
Ankylosauridae
Neornithischia
Ornithopoda
Thescelosauridae
Iguanodontia
Rhabdodontidae
Dryosauridae
Camptosauridae
Hadrosauridae
Marginocephaly
Pachycephalosauria
Ceratopsia
Chaoyangsauridae
Psittacosauridae
Neoceratops
Leptoceratopsidae
Bagaceratopsidae
Protoceratopsidae
Ceratopsidae
See also
Lizard hips
On topic elsewhere
Ornithischia, from Palæos. (cladogram, characteristics)
