Dinosaurs · Small theropod

Heyuannia

Say it Hey-YOU-ARN-ee-ah. The name means ‘from [the city of] Heyuan’.

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

Length: 2 m
Diet: Ate plants and animals
When: Late Cretaceous72 to 68 million years ago
Fossils found in: Mongolia
Named by: Barsbold (1981)
Family tree: Dinosauria › Saurischia › Theropoda › Neotheropoda › Tetanurae › Avetheropoda › Coelurosauria › Tyrannoraptora › Maniraptoriformes › Maniraptora › Oviraptorosauria › Caenagnathoidea › Oviraptoridae › Ingeniinae

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

Small theropods. Small two-legged dinosaurs, many feathered, the group that includes birds. See all 60

Lived at the same time

Anserimimus · same country
Borogovia · same country
Homalocephale · same country
Microceratus · same country
Mononykus · same country
Nemegtosaurus · same country
Nomingia · same country
Opisthocoelicaudia · same country

Other small theropods

Nomingia Late Cretaceous
Rinchenia Late Cretaceous
Velociraptor Late Cretaceous
Atrociraptor Late Cretaceous
Shuvuuia Late Cretaceous
Dromaeosaurus Late Cretaceous
Struthiomimus Late Cretaceous
Stenonychosaurus Late Cretaceous

Source: Heyuannia 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.