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nounbipedal herbivore having 10 inches of bone atop its head; largest boneheaded dinosaur ever found
Similar:
type of:
Definition that contains pachycephalosaur
- marginocephalian includes boneheaded (pachycephalosaurs) and horned (ceratopsian) dinosaurs
- suborder marginocephalia includes boneheaded (pachycephalosaurs) and horned (ceratopsian) dinosaurs
- marginocephalia includes boneheaded (pachycephalosaurs) and horned (ceratopsian) dinosaurs