The massive bodies of Centrosaurus were borne by stocky limbs, although at up to 18–20 ft (6m) they were not particularly large dinosaurs. Like other centrosaurines, Centrosaurus bore single large horns over their noses.[2] These horns curved forwards or backwards depending on the specimen. Skull ornamentation was reduced as animals aged.
Centrosaurus is distinguished by having two large hornlets which hook forwards over the frill. A pair of small upwards directed horns is also found over the eyes. The frills of Centrosaurus were moderately long, with fairly large fenestrae and small hornlets along the outer edges.[2