Platytholus

flat dome

• platys · Greek · flat, broad
• tholos · Greek · dome

The name combines the Greek "platys" (flat or broad) with "tholos" (dome). It refers to the relatively low, flattened skull dome typical of this pachycephalosaurid ("dome-headed") dinosaur. The "-tholus" ending is shared with other dome-headed genera such as Sphaerotholus.

Period

Late Cretaceous

Found in

Montana, USA (Hell Creek Formation)

Platytholus is a pachycephalosaurid known from fragmentary skull-dome material. Its validity and relationships are uncertain, and it may be a synonym of or a juvenile of another pachycephalosaurid. I am not confident about the author, year or current taxonomic status, so I have left them blank. Please check these against a primary source.