Dinosaurs · Large theropod

Deinocheirus

Say it DINE-oh-KIRE-us. The name means ‘terrible hand’.

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

Length: 10 m
Diet: Ate plants and animals
When: Late Cretaceous70 to 66 million years ago
Fossils found in: Mongolia
Named by: Osmolska and Roniewicz (1970)
Family tree: Dinosauria › Saurischia › Theropoda › Ornithomimosauria

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

Large theropods. Big two-legged meat-eaters, such as Tyrannosaurus. See all 63

Lived at the same time

Alioramus · same country
Anserimimus · same country
Borogovia · same country
Microceratus · same country
Prenocephale · same country
Heyuannia · same country
Homalocephale · same country
Mononykus · same country

Other large theropods

Gallimimus Late Cretaceous
Therizinosaurus Late Cretaceous
Alioramus Late Cretaceous
Carnotaurus Late Cretaceous
Indosuchus Late Cretaceous
Rajasaurus Late Cretaceous
Tyrannosaurus Late Cretaceous
Abelisaurus Late Cretaceous

Source: Deinocheirus 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.