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nounextinct terrestrial reptiles having bird-like pelvises: armored dinosaurs (thyreophorans); boneheaded and horned dinosaurs (marginocephalians); duck-billed dinosaurs (euronithopods)
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Definition that contains ornithischia
- stegosaurus herbivorous ornithischian dinosaur with a row of bony plates along its back and a spiked tail probably used as a weapon
- stegosaur herbivorous ornithischian dinosaur with a row of bony plates along its back and a spiked tail probably used as a weapon
- hadrosaur any of numerous large bipedal ornithischian dinosaurs having a horny duck-like bill and webbed feet; may have been partly aquatic
- duck-billed dinosaur any of numerous large bipedal ornithischian dinosaurs having a horny duck-like bill and webbed feet; may have been partly aquatic
- hadrosaurus any of numerous large bipedal ornithischian dinosaurs having a horny duck-like bill and webbed feet; may have been partly aquatic
- genus pisanosaurus primitive ornithischian dinosaur found in Argentina; early Triassic
- stegosaur stenops herbivorous ornithischian dinosaur with a row of bony plates along its back and a spiked tail probably used as a weapon
- genus staurikosaurus primitive ornithischian dinosaur found in Brazil