Gravitholus

From Wikipedia, the free encyclopedia

Gravitholus Fossil range: Late Cretaceous
Conservation status
Fossil
Scientific classification
Kingdom: Animalia Phylum: Chordata Class: Sauropsida Superorder: Dinosauria Order: Ornithischia Suborder: Marginocephalia Infraorder: Pachycephalosauria Family: Pachycephalosauridae Genus: Gravitholus Wall & Galton (1979)
Species
G. albertae

Gravitholus was a genus of dinosaur from the late Cretaceous period (Campanian stage, around 75 million years ago). It was a pachycephalosaur, a type of dinosaur with a thick skull made of hardened bone. It lived in what is now Alberta, Canada, and was described in 1979 by W. P. Wall and Peter Galton.

The type species is Gravitholus albertae. There is some debate amongst paleontologists as to whether the animal represents a distinct genus, or if it may be synonymous with Stegoceras. Recent publications indicate it may be a valid genus.

[edit] References

• Wall, W.P. & Galton, P.M. (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

• Maryanska, T., Chapman, R.E., and Weishampel, D.B. (2004). "Pachycephalosauria". In D. B. Weishampel, P. Dodson & H. Osmólska (eds.), The Dinosauria (second edition). University of California Press, Berkeley 464-477

[edit] External links

• Gravitholus at the Paleobiology Database
• Pachycephalosauria at Thescelosaurus!
• Gravitholus on the Dinosaur Mailing List