Ornatotholus is a genus of pachycephalosaur dinosaur from southern Alberta. Prior to the discovery of D. hogwartsia in South Dakota, it was the only known North American pachycephalosaur with a flat skull roof. It appears to share many similarities with Stegoceras, and may represent a juvenile form, making it a nomen dubium.
Researchers from University of Toronto Provide Details of New Studies and Findings in the Area of Life Science Research.(Report)
Oct 10, 2011; Scientists discuss in "Cranial ontogeny in Stegoceras validum (Dinosauria: Pachycephalosauria): a quantitative model of...