Dinosaurs · Large ornithopod

Saurolophus

Say it SORE-oh-LOAF-us. The name means ‘ridged lizard’.

Saurolophus 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: 9 m
Diet: Plant-eater
When: Late Cretaceous74 to 70 million years ago
Fossils found in: Canada, Mongolia
Named by: Brown (1912)
Family tree: Dinosauria › Ornithischia › Ornithopoda › Hadrosauridae › Euhadrosauria › Hadrosaurinae

Where Saurolophus 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

Lived at the same time

Alectrosaurus · same country
Anchiceratops · same country
Anserimimus · same country
Borogovia · same country
Chirostenotes · same country
Dromiceiomimus · same country
Edmontosaurus · same country
Euoplocephalus · same country

Other large ornithopods

Corythosaurus Late Cretaceous
Edmontosaurus Late Cretaceous
Gilmoreosaurus Late Cretaceous
Lambeosaurus Late Cretaceous
Rhabdodon Late Cretaceous
Parasaurolophus Late Cretaceous
Prosaurolophus Late Cretaceous
Secernosaurus Late Cretaceous

Source: Saurolophus 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.