Dinosaurs · Large ornithopod
Edmontosaurus
Say it ed-MON-toe-sore-us. The name means ‘Edmonton lizard’.
- Length
- 13 m
- Weight
- 3.4 tonnes
- Diet
- Plant-eatertough pine needles, cones and twigs
- Walked
- On 2 or 4 legs
- When
- Late Cretaceous76 to 66 million years ago
- Fossils found in
- Canada
- Named by
- Lambe (1917)
- Family tree
- Dinosauria › Ornithischia › Ornithopoda › Hadrosauridae › Euhadrosauria › Hadrosaurinae
Large ornithopods. Big plant-eaters that walked on two or four legs, including the duck-billed dinosaurs. See all 36
Lived at the same time
- Thescelosaurus · same country
- Chirostenotes · same country
- Ornithomimus · same country
- Euoplocephalus · same country
- Pachyrhinosaurus · same country
- Arrhinoceratops · same country
- Gryposaurus · same country
- Anchiceratops · same country
Other large ornithopods
- Corythosaurus Late Cretaceous
- Gilmoreosaurus Late Cretaceous
- Lambeosaurus Late Cretaceous
- Rhabdodon Late Cretaceous
- Parasaurolophus Late Cretaceous
- Prosaurolophus Late Cretaceous
- Hadrosaurus Late Cretaceous
- Kritosaurus Late Cretaceous
Source: Edmontosaurus 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.