Also found in: Thesaurus.
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|Noun||1.||suborder Marginocephalia - includes boneheaded (pachycephalosaurs) and horned (ceratopsian) dinosaurs|
animal order - the order of animals
order Ornithischia, Ornithischia - extinct terrestrial reptiles having bird-like pelvises: armored dinosaurs (thyreophorans); boneheaded and horned dinosaurs (marginocephalians); duck-billed dinosaurs (euronithopods)
suborder Pachycephalosaurus - boneheaded dinosaurs; late Cretaceous
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