- Length
- 1.7 m
- Diet
- Ate plants and animals
- When
- Late Cretaceous79 to 67 million years ago
- Fossils found in
- Canada
- Named by
- Gilmore (1924)
- Family tree
- Dinosauria › Saurischia › Theropoda › Caenagnathidae
Small theropods. Small two-legged dinosaurs, many feathered, the group that includes birds. See all 60
Lived at the same time
- Edmontosaurus · same country
- Thescelosaurus · same country
- Gryposaurus · same country
- Ornithomimus · same country
- Euoplocephalus · same country
- Gorgosaurus · same country
- Pachyrhinosaurus · same country
- Arrhinoceratops · same country
Other small theropods
- Troodon Late Cretaceous
- Avimimus Late Cretaceous
- Citipati Late Cretaceous
- Conchoraptor Late Cretaceous
- Khaan Late Cretaceous
- Mononykus Late Cretaceous
- Stenonychosaurus Late Cretaceous
- Dromaeosaurus Late Cretaceous
Source: Chirostenotes 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.