Arrhinoceratops

Say it like this: “a-RIEN-o-SER-a-tops”

Arrhinoceratops brachyops

Arrhinoceratops ate plants and walked on four legs. It lived in the Late Cretaceous. Bones have been found in Canada.

Quiz me on Arrhinoceratops

When: Late Cretaceous (Campanian · Maastrichtian) · roughly 83.6 to 66 million years ago
Named in: 1925 · Parks, W. A.
Hip height: Not established
Length: 6 m · 20 ft
Weight: 1.3 tonnes
Found in: Canada · Horseshoe Canyon
Food and walking: Herbivore · Four legs
Kind: horned dinosaur · Ceratopsian
Family branch: Chasmosaurinae

The story in short

In 1925, W. A. Parks published the name Arrhinoceratops. The name means “no nose-horn face.”

Fossils referred to Arrhinoceratops date to the Late Cretaceous (Campanian · Maastrichtian), roughly 83.6 to 66 million years ago. Finds come from Canada, including the Horseshoe Canyon Formation. It was a herbivore and walked on four legs.

Published estimates put Arrhinoceratops at a length near 6 m and a body mass around 1.3 tonnes.

On the family tree it sits in Chasmosaurinae, among the horned dinosaurs.

Close relatives

Agujaceratops

Agujaceratops mariscalensis

Late Cretaceous (Campanian) · roughly 83.6 to 72.2 million years ago

Anchiceratops

Anchiceratops ornatus

Late Cretaceous (Campanian · Maastrichtian) · roughly 83.6 to 66 million years ago

Bisticeratops

Bisticeratops froeseorum

Late Cretaceous (Campanian) · roughly 83.6 to 72.2 million years ago