Anatomy: This ceratopsian dinosaur had a large, forward-pointing snout horn 18 inches (46 cm) long. The skull was over 3 ft (1 m) long. Its scalloped frill had two hooked spikes near the center. Centrosaurus was about 20 feet (6 m) long, 6 feet (1.8 m) tall, and weighed up to 3 tons.

Diet: Centrosaurus was an herbivore (a plant eater) that ate low-lying plants.

Fossils: Centrosaurus was discovered by paleontologist Lawrence M. Lambe in 1904. Many skulls and skeletons (and a fossilized skin impression) of this ornithischian dinosaur have been found in fossil bonebeds in Alberta, Canada. The type species is C. apertus.