Dinosaurs · Small ornithischian
Hypsilophodon
Say it hip-sih-LOH-foh-don. The name means ‘high-crested tooth’.
- Length
- 2 m
- Weight
- 20 kg
- Diet
- Plant-eaterplant material
- Walked
- On 2 legs
- When
- Early Cretaceous130 to 125 million years ago
- Fossils found in
- England
- Named by
- Huxley (1869)
- Family tree
- Dinosauria › Ornithischia › Neornithischia
Small ornithischians. Small early bird-hipped plant-eaters. See all 7
Found in Britain. Fossils of Hypsilophodon have been found in the United Kingdom. Read about how Britain moved across the globe in Britain's journey.
Lived at the same time
- Iguanodon · same country
- Valdosaurus · same country
- Eotyrannus · same country
- Neovenator · same country
- Baryonyx · same country
- Pelorosaurus · same country
- Polacanthus · same country
- Afrovenator
Other small ornithischians
- Enigmacursor Late Jurassic
- Othnielia Late Jurassic
- Agilisaurus Late Jurassic
- Heterodontosaurus Early Jurassic
- Lycorhinus Late Triassic
- Lesothosaurus Early Jurassic
Source: Hypsilophodon 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.