Kosmoceratops

Say it like this: “KOZ-mo-SEH-ruh-tops”

Kosmoceratops richardsoni

Kosmoceratops ate plants and walked on four legs. It lived in the Late Cretaceous. Bones have been found in the United States.

Quiz me on Kosmoceratops

When: Late Cretaceous (Campanian) · roughly 83.6 to 72.2 million years ago
Named in: 2010 · Sampson, S. D.; Loewen, M. A.; Farke, A. A.; Roberts, E. M.; Forster, C. A.; Smith, J. A.; Titus, A. L.
Hip height: 1.8 m · 6 ft
Length: 4.5 m · 15 ft
Weight: 1.2 tonnes
Found in: the United States · Kaiparowits
Food and walking: Herbivore · Four legs
Kind: horned dinosaur · Ceratopsian
Family branch: Chasmosaurinae

The story in short

In 2010, S. D. Sampson and colleagues published the name Kosmoceratops. The name means “ornate horned face.”

Fossils referred to Kosmoceratops date to the Late Cretaceous (Campanian), roughly 83.6 to 72.2 million years ago. Finds come from the United States, including the Kaiparowits Formation. It was a herbivore and walked on four legs.

Published estimates put Kosmoceratops at a length near 4.5 m, hips about 1.8 m high, and a body mass around 1.2 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

Arrhinoceratops

Arrhinoceratops brachyops

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