Dinosaur Park Fm., AlbertaNamed 1913

Styracosaurus

sty-RAK-oh-SORE-us

"spiked lizard"

Lived
84 to 72 million years ago, Late Cretaceous
Diet
Herbivore
Length
about 5.5 m (18 ft)
Group
Ceratopsians, Ceratopsidae
Found in
Canada
Named by
Lambe 1913

Size comparison

To scale

Where its fossils were found

The evidence

Today

10 finds

80 million years ago

Map: C. R. Scotese, PALEOMAP

Field notes

About Styracosaurus

What it was like

Styracosaurus had a long, curved horn on its nose and a bony neck frill ringed with several long spikes. Its beak and rows of tightly packed cheek teeth were built for slicing tough plants. It grew to roughly 5.5 meters (18 feet) long and walked on four short, sturdy legs.

Scientists still debate what the horn and spiked frill were used for. They may have helped Styracosaurus recognize others of its species, attract mates, or defend itself against predators.

Its world

Styracosaurus lived from about 84 to 72 million years ago, in the Late Cretaceous, in what is now Alberta, Canada. Its fossils come from the Dinosaur Park Formation.

It shared this world with the horned Triceratops, the crested Parasaurolophus, the thick-skulled Pachycephalosaurus, the small predator Troodon, and the large hunters Gorgosaurus and Daspletosaurus.

How it was found

Lambe named Styracosaurus in 1913. About 10 fossil finds of the genus are known today, including bonebeds that suggest Styracosaurus may have lived and traveled in herds. It is considered a close relative of other horned dinosaurs such as Centrosaurus, Pachyrhinosaurus, and Triceratops.

Lived alongside

Found in the same rock formations

Close relatives

Other members of Ceratopsidae

Sources: WikidataNamed in: L. M. Lambe. 1913. A new genus and species of Ceratopsia from the Belly River Formation of Alberta. The Ottawa Naturalist 27(9):109-116