PaleoDB taxon number: 170628
Alternative combination: Styracosaurus ovatus
Full reference: C. W. Gilmore. 1930. On dinosaurian reptiles from the Two Medicine Formation of Montana. Proceedings of the United States National Museum 77(16):1-39
Sister taxa: none
Type specimen: USNM 11869, a skull. Its type locality is S. ovatus type, Milk River (USNM 11869), which is in a Campanian terrestrial horizon in the Two Medicine Formation of Montana.
Ecology: ground dwelling herbivore