Dinosaurs · Ceratopsian

Arrhinoceratops

Say it ay-rine-oh-ker-ah-tops. The name means ‘without-nose-horn face’.

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

Length: 6 m
Diet: Plant-eater
When: Late Cretaceous72 to 67 million years ago
Fossils found in: Canada
Named by: Parks (1925)
Family tree: Dinosauria › Ornithischia › Ceratopsidae › Chasmosaurinae

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

Ceratopsians. Horned and frilled plant-eaters, such as Triceratops. See all 29

Lived at the same time

Chirostenotes · same country
Edmontosaurus · same country
Ornithomimus · same country
Thescelosaurus · same country
Pachyrhinosaurus · same country
Torosaurus · same country
Anchiceratops · same country
Dromiceiomimus · same country

Other ceratopsians

Anchiceratops Late Cretaceous
Einiosaurus Late Cretaceous
Pachyrhinosaurus Late Cretaceous
Protoceratops Late Cretaceous
Torosaurus Late Cretaceous
Centrosaurus Late Cretaceous
Chasmosaurus Late Cretaceous
Pentaceratops Late Cretaceous

Source: Arrhinoceratops 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.