Look up · dinosaur 1179 of 1,425
dome-headed dinosaur
Stegoceras
Say it like this: “ste-GOS-er-as”
Stegoceras validum
Stegoceras ate plants and walked on two legs. It lived in the Late Cretaceous. Bones have been found in Canada.
- When
- Late Cretaceous (Campanian) · roughly 83.6 to 72.2 million years ago
- Named in
- 1902 · Lambe, L. M.
- Hip height
- Not established
- Length
- 2–2.5 m · 7–8 ft
- Weight
- 10–40 kg · 22–88 lb
- Found in
- Canada · Dinosaur Park
- Food and walking
- Herbivore · Two legs
- Kind
- dome-headed dinosaur · Pachycephalosaur
- Family branch
- Pachycephalosauridae
The story in short
The genus Stegoceras dates to 1902, the year L. M. Lambe described it. The name means “horn roof.”
Fossils referred to Stegoceras date to the Late Cretaceous (Campanian), roughly 83.6 to 72.2 million years ago. Finds come from Canada, including the Dinosaur Park Formation. It was a herbivore and walked on two legs.
Published estimates put Stegoceras at a length near 2–2.5 m and a body mass around 10–40 kg.
On the family tree it sits in Pachycephalosauridae, among the dome-headed dinosaurs.
Close relatives
Amtocephale
Amtocephale gobiensis
Late Cretaceous (Turonian · Coniacian · Santonian) · roughly 93.9 to 83.6 million years ago
Colepiocephale
Colepiocephale lambei
Late Cretaceous (Campanian) · roughly 83.6 to 72.2 million years ago
Hanssuesia
Hanssuesia sternbergi
Late Cretaceous (Campanian) · roughly 83.6 to 72.2 million years ago