Orodromeus

Say it like this: “OR-o-DROHM-ee-us”

Orodromeus makelai

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

Quiz me on Orodromeus

When: Late Cretaceous (Campanian) · roughly 83.6 to 72.2 million years ago
Named in: 1988 · Horner, J. R.; Weishampel, D. B.
Hip height: 0.5 m · 1 ft
Length: 2.5 m · 8 ft
Weight: 7 kg · 15 lb
Found in: the United States · Two Medicine
Food and walking: Herbivore · Two legs
Kind: bird-hipped dinosaur · Ornithischian
Family branch: Orodrominae

The story in short

Orodromeus was formally named in 1988 by J. R. Horner and D. B. Weishampel. The name means “mountain Runner.”

It lived in the Late Cretaceous (Campanian), roughly 83.6 to 72.2 million years ago. Finds come from the United States, including the Two Medicine Formation. It was a herbivore and walked on two legs.

Published estimates put Orodromeus at a length near 2.5 m, hips about 0.5 m high, and a body mass around 7 kg.

On the family tree it sits in Orodrominae, among the bird-hipped dinosaurs.

Close relatives

Albertadromeus

Albertadromeus syntarsus

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

Koreanosaurus

Koreanosaurus boseongensis

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

Oryctodromeus

Oryctodromeus cubicularis

Late Cretaceous (Cenomanian) · roughly 100.5 to 93.9 million years ago