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Definition of Bone-headed dinosaur
1. Noun. Bipedal herbivorous dinosaurs with bony crowns.
Generic synonyms: Ornithischian, Ornithischian Dinosaur
Group relationships: Suborder Pachycephalosaurus
Specialized synonyms: Pachycephalosaur, Pachycephalosaurus
Group relationships: Suborder Pachycephalosaurus
Specialized synonyms: Pachycephalosaur, Pachycephalosaurus