Marginocephalia

Thesaurus

Noun

1.Marginocephalia - includes boneheaded (pachycephalosaurs) and horned (ceratopsian) dinosaursmarginocephalian, suborder Marginocephaliaanimal order - the order of animalsorder 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 CretaceousCeratopsia, suborder Ceratopsia - horned dinosaurs