- Length
- 6 m
- Weight
- 490 kg
- Diet
- Ate plants and animals
- Walked
- On 2 legs
- When
- Late Cretaceousabout 70 million years ago
- Fossils found in
- Mongolia
- Named by
- Osmolska, Roniewicz and Barsbold (1972)
- Family tree
- Dinosauria › Saurischia › Theropoda › Ornithomimosauria › Ornithomimidae
Large theropods. Big two-legged meat-eaters, such as Tyrannosaurus. See all 63
Lived at the same time
- Alectrosaurus · same country
- Alioramus · same country
- Anserimimus · same country
- Borogovia · same country
- Deinocheirus · same country
- Heyuannia · same country
- Homalocephale · same country
- Microceratus · same country
Other large theropods
- Deinocheirus Late Cretaceous
- Therizinosaurus Late Cretaceous
- Alioramus Late Cretaceous
- Carnotaurus Late Cretaceous
- Indosuchus Late Cretaceous
- Rajasaurus Late Cretaceous
- Tyrannosaurus Late Cretaceous
- Abelisaurus Late Cretaceous
Source: Gallimimus 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.