Dinosaurs · Large ornithopod

Gryposaurus

Say it grip-oh-sore-us. The name means ‘hook-nosed lizard’.

Gryposaurus 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: 10 m
Diet: Plant-eater
When: Late Cretaceous86 to 71 million years ago
Fossils found in: Canada, USA
Named by: Lambe (1914)
Family tree: Dinosauria › Ornithischia › Ornithopoda › Hadrosauridae › Euhadrosauria › Hadrosaurinae

Where Gryposaurus 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

Bambiraptor · same country
Dryptosaurus · same country
Lophorhothon · same country
Achelousaurus · same country
Chirostenotes · same country
Gorgosaurus · same country
Albertaceratops · same country
Avaceratops · same country

Other large ornithopods

Bactrosaurus Late Cretaceous
Lophorhothon Late Cretaceous
Telmatosaurus Late Cretaceous
Tsintaosaurus Late Cretaceous
Brachylophosaurus Late Cretaceous
Nipponosaurus Late Cretaceous
Tanius Late Cretaceous
Maiasaura Late Cretaceous

Source: Gryposaurus 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.