Describer

Bohlin, 1953

Time

Cretaceous Late Campanian Maastrichtian

Classification

Ornithischia Genasauria Cerapoda Marginocephalia Pachycephalosauria Pachycephalosauridae

Diet

Herbivore

Fossilsite

Minhe Formation, Tsodolein Khuduk Beds, Nei Mongol Zizhiqu. China

Info

Unnamed Pachycephalosauridae = Troodon bexelli

Represented by a badly preserved fragment of the parietal.

The species differs significantly from all other described forms in its comparatively extensive pareitosquamosal shelf, closed supratemporal fenestrae, and extensive participation of the perietal in the caudal margin of the skull.