Dinosaurs · Pachycephalosaur

Homalocephale

Say it Home-ah-loh-keff-ah-lee. The name means ‘level head’.

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

Length: 1.5 m
Diet: Plant-eater
When: Late Cretaceous72 to 68 million years ago
Fossils found in: Mongolia
Named by: Maryańska and Osmólska (1974)
Family tree: Dinosauria › Ornithischia › Neornithischia › Cerapoda › Marginocephalia › Pachycephalosauria › Goyocephala › Homalocephaloidea

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

Pachycephalosaurs. Two-legged plant-eaters with thick, domed skulls. See all 8

Lived at the same time

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

Other pachycephalosaurs

Pachycephalosaurus Late Cretaceous
Tylocephale Late Cretaceous
Stegoceras Late Cretaceous
Stygimoloch Late Cretaceous
Dracorex Late Cretaceous
Prenocephale Late Cretaceous
Goyocephale Late Cretaceous

Source: Homalocephale 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.