Outline: a typical pachycephalosaur
Homalocephale
HOM-a-loh-SEF-a-lee
"even head"
- Lived
- 72 to 66 million years ago, Late Cretaceous
- Diet
- Herbivore
- Length
- about 1.5 m (5 ft)
- Group
- Pachycephalosaurs
- Found in
- Mongolia
- Named by
- Maryańska and Osmólska 1974
Size comparison
To scale
Scale in metersOutline: typical pachycephalosaur shape
Where its fossils were found
The evidence
Today
70 million years ago
Field notes
About Homalocephale
What it was like
Homalocephale was a small bone-headed dinosaur, about 1.5 meters (5 feet) long. Unlike Pachycephalosaurus, it had a flat, thick skull roof rather than a tall dome, with small bumps around the edges. It walked on two legs and probably ate plants.
Its world
It lived about 72 to 66 million years ago, in the Late Cretaceous, in what is now Mongolia. Its bones come from the Nemegt Formation, a land of rivers where it lived alongside the huge predator Tarbosaurus and the ostrich-like Gallimimus.
How it was found
Maryańska and Osmólska named Homalocephale in 1974. Some scientists have suggested it is a young Prenocephale, with its flat head becoming domed as it grew, but others disagree.
Lived alongside
Found in the same rock formations
Close relatives
Other members of Eupachycephalosauria
Sources: WikidataNamed in: T. Maryańska and H. Osmólska. 1974. Pachycephalosauria, a new suborder of ornithischian dinosaurs. Palaeontologia Polonica 30:45-102