Its head resembles a cross between that of a ceratosaurus and styracosaurus or sinoceratops. Many new species were being described, including "Centrosaurus", "Styracosaurus", and "Chasmosaurus". The bulky body of "Styracosaurus" resembled that of a rhinoceros. They were shorter and thinner than the corresponding spikes of "Styracosaurus". Its closest relatives appear to be "Styracosaurus" and "Monoclonius". However, a "Styracosaurus" appears and drives Gwangi away. It has also been suggested as the direct ancestor of "Styracosaurus albertensis". He transforms into a "Styracosaurus" and is a remold of Guiledart. Ceratopsid teeth, including those of "Styracosaurus", were arranged in groups called batteries. "Styracosaurus" and other horned dinosaurs are often depicted in popular culture as herd animals. The first two genera would be transitional forms, evolving through anagenesis from "Styracosaurus". He later noted that for "Styracosaurus", the spikes would have given it a formidable appearance. The authors considered "R. ovatus" to be a junior synonym of "Styracosaurus albertensis". Formerly this species was assigned to "Styracosaurus".. Dodson believed one species of "Monoclonius", "M. nasicornus", may actually have been a female "Styracosaurus".