Styracosaurus

Styracosaurus was a medium-sized Ceratopsian that lived in the Mid-Cretaceous of North America. It had many sharp spikes along its frill, and a horn on its nose.

In Jurassic Park
Styracosaurus was on the dinosaur list, but not seen, in the novel.

In Video Games
Styracosaurus was, however, featured as a two-star small herbivore in the game, Jurassic Park: Operation Genesis, and as a playable character in Jurassic Park: Warpath.