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Gravitholus Wall and Galton 1979 (ornithischian)

Reptilia - Dinosauria - Pachycephalosauridae

Full reference: W. P. Wall and P. M. Galton. 1979. Notes on pachycephalosaurid dinosaurs (Reptilia: Ornithischia) from North America, with comments on their status as ornithopods. Canadian Journal of Earth Sciences 16:1176-1186

Parent taxon: Pachycephalosauridae according to R. M. Sullivan 2006

Sister taxa: Acrotholus, Alaskacephale, Amtocephale, Colepiocephale, Hanssuesia, Pachycephalosaurinae, Pachycephalosaurini, Pachycephalosaurus, Prenocephale, Stegoceras, Stygimoloch, Texacephale, Tylocephale, Domocephalinae

Subtaxa: Gravitholus albertae

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Ecology: ground dwelling herbivore