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Ceratopsians were ornithischians, or "bird-hipped" dinosaurs, such as the well known Triceratops. Forms without the enormous horns and frills of Triceratops, in the family Protoceratopsidae, include the Mongolian genus Protoceratops and the unusual bipedal, frill-less dinosaur Psittacosaurus ("parrot-lizard"). This description of their classification, morphology, locomotion, and eating habits also includes active links for further study.
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Subject: Biology Resource Type: Scientific Resources:Overview/Reference Work Grade Level: College Upper (15-16), Informal, College Lower (13-14), High School (9-12) Focus on the Cretaceous: Paleontology Topics: Biosphere, Time/Earth HistoryKeyword: Cretaceous