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ornithischian |
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ornithischianAny of the “bird-hipped” dinosaur species (order Ornithischia), herbivores with hip bones arranged like those of modern birds, with the pubis bone pointed backward. Many species had a toothless, horny beak and powerful cheek teeth. Ornithischians flourished from the Late Triassic to the Late Cretaceous Epoch (227–65 million years ago). Many species (in the suborder Cerapoda) were bipedal and had ornate skull structures. Some were quadrupedal, with a massive head culminating in a great bony frill. Other quadrupeds (in the suborder Thyreophora) had small heads and were heavily plated and armoured along the back, and some had armour on the flanks and head as well. See also protoceratops; saurischian; stegosaur; triceratops. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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It contains fragments of bone from a juvenile ornithischian dinosaur--perhaps part of the head frill of a Triceratops, one of the most common dinosaurs whose remains appear in nearby rocks, say Chin and her colleagues. If the dinosaurs had driven other reptiles out through competition, the numbers should show ornithischian dinosaurs becoming more common and other herbivorous reptiles less common. |
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ornithischian
