- Length
- 2.3 m
- Diet
- Plant-eater
- When
- Late Cretaceous80 to 75 million years ago
- Fossils found in
- USA
- Named by
- Dodson (1986)
- Family tree
- Dinosauria › Ornithischia › Ceratopsidae › Centrosaurinae
Ceratopsians. Horned and frilled plant-eaters, such as Triceratops. See all 29
Lived at the same time
- Achelousaurus · same country
- Albertaceratops · same country
- Bambiraptor · same country
- Dryptosaurus · same country
- Gorgosaurus · same country
- Gryposaurus · same country
- Lophorhothon · same country
- Maiasaura · same country
Other ceratopsians
- Albertaceratops Late Cretaceous
- Udanoceratops Late Cretaceous
- Achelousaurus Late Cretaceous
- Centrosaurus Late Cretaceous
- Chasmosaurus Late Cretaceous
- Micropachycephalosaurus Late Cretaceous
- Pentaceratops Late Cretaceous
- Styracosaurus Late Cretaceous
Source: Avaceratops 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.