Gravitholus

Taxobox|
name = "Gravitholus"


image_width = 200px
status = fossil
fossil_range = Late Cretaceous
regnum = Animalia
phylum = Chordata
classis = Sauropsida
superordo = Dinosauria
ordo = Ornithischia
subordo = Marginocephalia
infraordo = Pachycephalosauria
familia = Pachycephalosauridae
genus = "Gravitholus"
genus_authority = Wall & Galton (1979)
subdivision_ranks = Species
subdivision =
* "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.

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

External links

* [http://paleodb.org/cgi-bin/bridge.pl?action=checkTaxonInfo&taxon_no=38784&is_real_user=0 "Gravitholus" at the Paleobiology Database]
* [http://www.users.qwest.net/~jstweet1/pachycephalosauria.htm Pachycephalosauria] at Thescelosaurus!
* [http://dml.cmnh.org/1998Nov/msg00667.html "Gravitholus" on the Dinosaur Mailing List]