Camptosaurus

Say it like this: “KAMP-tuh-SOR-uhs”

Camptosaurus dispar

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

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When: Late Jurassic (Kimmeridgian) · roughly 154.8 to 149.2 million years ago
Named in: 1885 · Marsh, O. C.
Hip height: 2 m · 7 ft
Length: 5–6.8 m · 16–22 ft
Weight: 0.5–1 tonnes
Found in: the United States · Morrison
Food and walking: Herbivore · Two legs
Kind: beaked plant-eater · Ornithopod
Family branch: Ankylopollexia

The story in short

Camptosaurus was formally named in 1885 by O. C. Marsh.

It lived in the Late Jurassic (Kimmeridgian), roughly 154.8 to 149.2 million years ago. Finds come from the United States, including the Morrison Formation. It was a herbivore and walked on two legs.

Published estimates put Camptosaurus at a length near 5–6.8 m, hips about 2 m high, and a body mass around 0.5–1 tonnes.

On the family tree it sits in Ankylopollexia, among the ornithopod dinosaurs.

Close relatives

Osmakasaurus

Osmakasaurus depressus

Early Cretaceous (Berriasian · Valanginian) · roughly 143.1 to 132.6 million years ago

Owenodon

Owenodon hoggii

Early Cretaceous (Berriasian) · roughly 143.1 to 137.1 million years ago

Uteodon

Uteodon aphanoecetes

Late Jurassic (Tithonian) · roughly 149.2 to 143.1 million years ago