any member of the large taxonomic group of herbivorous dinosaurs comprising Triceratops and all dinosaurs more closely related to it than to birds. ... [7 related articles] Found on http://www.britannica.com/eb/a-z/o/32
(pronounced or-ni-THISS-key-an ) Ornithischian (bird-hipped) dinosaurs were herbivoroud dinoaurs that had hoof-like claws. Some ornithischians include the Ornithopods (Fabrosaurs, Hadrosaurs, Hypsilophodontids, Iguanodontids, Camptosaurids), Thyreophorans (Ankylosaurids, Stegosaurids), and Marginocephalians (Ceratopsians, Pachycephalosaurs). Found on http://www.enchantedlearning.com/subjects/dinosaurs/glossary/