#bone-headed_dinosaur  bipedal herbivorous dinosaurs with bony crowns
  supertype:  ornithischian_dinosaur__ornithischiandinosaur__ornithischian  herbivorous dinosaur with a pelvis like that of a bird
  member of:  suborder_Pachycephalosaurus
  subtype:  pachycephalosaur__pachycephalosaurus  bipedal herbivore having 10 inches of bone atop its head; largest bone-headed dinosaur ever found

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