Dinosaurs · Large ornithopod

Camptosaurus

Say it KAMP-toe-sore-us. The name means ‘bent lizard’.

Camptosaurus beside a person 1.75 m tall. Ticks mark every metre.Body shape drawn for this site, showing the general build of large ornithopods

Length: 5 m
Weight: 1 tonnes
Diet: Plant-eaterplants
Walked: On 2 or 4 legs
When: Late Jurassic155 to 145 million years ago
Fossils found in: England, USA
Named by: Marsh (1885)
Family tree: Dinosauria › Ornithischia › Ornithopoda › Euornithopoda › Iguanadontia › Euiguanadontia › Dryomorpha › Ankylopollexia

Where Camptosaurus sits in the age of dinosaurs.Periods from the ICS chart; dinosaur dates from the Natural History Museum

Large ornithopods. Big plant-eaters that walked on two or four legs, including the duck-billed dinosaurs. See all 36

Found in Britain. Fossils of Camptosaurus have been found in the United Kingdom. Read about how Britain moved across the globe in Britain's journey.

Lived at the same time

Barosaurus · same country
Coelurus · same country
Dryosaurus · same country
Gargoyleosaurus · same country
Haplocanthosaurus · same country
Hesperosaurus · same country
Marshosaurus · same country
Othnielia · same country

Other large ornithopods

Iguanodon Early Cretaceous
Equijubus Early Cretaceous
Jinzhousaurus Early Cretaceous
Fukuisaurus Early Cretaceous
Lurdusaurus Early Cretaceous
Probactrosaurus Early Cretaceous
Tenontosaurus Early Cretaceous
Ouranosaurus Early Cretaceous

Source: Camptosaurus in the Natural History Museum Dino Directory, read 12 November 2026. Sizes are the museum's estimates for a typical adult. "Lived at the same time" lists dinosaurs whose dates overlap, which does not always mean they met.