New data on pachycephalosaurid dinosaurs (Reptilia: Ornithischia) from North America

P. M. Galton, and H.-D. Sues

1983

Article

Canadian Journal of Earth Sciences 20(3):462-472

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Taxa discussed in this work:

• Ornatotholus
• Pachycephalosaurus wyomingensis
• Stygimoloch
• Stygimoloch spinifer