Hanssuesia

Taxobox|
name = "Hanssuesia"


image_width = 200px
status = fossil
fossil_range =
regnum = Animalia
phylum = Chordata
classis = Sauropsida
superordo = Dinosauria
ordo = Ornithischia
subordo = Pachycephalosauria
familia = Pachycephalosauridae
genus = "Hanssuesia"
genus_authority = Sullivan, 2003
subdivision_ranks = Species
subdivision = "H. sternbergi" Taxobox_authority | author = (Brown & Schlaikjer | date = 1943)

"Hanssuesia" is a genus of pachycephalosaurid dinosaur from the late Cretaceous period. It lived in what is now Alberta and Montana. Like other pachycephalosaurs, "Hanssuesia" had a thick skull roof. However, "Hanssuesia" is distinguished from other pachycephalosaurs by having a depressed parietal region, wide frontoparietal dome, broad nasal characteristics, reduced prefontal lobes, and a reduced parietosquamosal shelf.

The type species, "Hanssuesia sternbergi" was named by Sullivan in 2003, based on material originally named "Troodon sternbergi" by Barnum Brown and Erich Maren Schlaikjer in 1943. It also briefly went by the name "Stegoceras sternbergi", due to a perceived conflict in cladistic analyses (Ryan and Evans, 2005).

References

* Sullivan, RM. (2003). "Hanssuesia", the correct generic name for 'Hanssuessia' Sullivan, 2003". "Journal of Vertebrate Paleontology" 23(3):714

External links

* [http://www.users.qwest.net/~jstweet1/pachycephalosauria.htm Pachycephalosauria]