Notes on pachycephalosaurid dinosaurs (Reptilia: Ornithischia) from North America, with comments on their status as ornithopods

W. P. Wall, and P. M. Galton

1979

Article

Canadian Journal of Earth Sciences 16:1176-1186

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Taxa discussed in this work:

• Gravitholus
• Gravitholus albertae
• Ornatotholus browni