Styracosaurus albertensis

Pronunciation: Stye-rack-oh-sore-uss al-ber-ten-syss
Meaning: Spike-lizard from Alberta
Period: Late Cretaceous
Length: 5m
Weight: 2-3t
Fossil discoveries: Canada (Alberta)
Diet: Plants

Styracosaurus is unique among the North American Ceratopsians, because remains have only been found in one isolated location from the entire continent – Dinosaur Provincial Park in Alberta. Styracosaurus was from the subfamily Centrosaurinae, and was closely related to several other Centrosaurines found in the park. The neck frill and nose-horn of Styracosaurus were more spectacular than most Centrosaurines.
Unlike the frill of Triceratops, Styracosaurus had large fenestra (openings) in the bone on either side, presumably to lighten the head. Because of these fenestrae, it is unlikely this frill would have been able to withstand a direct attack from a large Tyrannosaurid, though these attacks would have been few and far-between due to the intimidating appearance of the many spikes.
Most of the larger Ceratopsians would have had extremely powerful neck muscles, in order to move those enormous heads. It is thought that the hard patch of scutes (dermal plates of bone) on the bellies of many large Tyrannosaurids had evolved specifically to protect them from the horns of these well-defended dinosaurs.