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beaked plant-eater
Calvarius
Say it like this: “cal-VAH-ree-us”
Calvarius rapidus
Calvarius ate plants and walked on two or four legs. It lived in the Late Cretaceous. Bones have been found in Spain.
- When
- Late Cretaceous (Maastrichtian) · roughly 72.2 to 66 million years ago
- Named in
- 2022 · Prieto-Márquez, A.; Sellés, A.
- Hip height
- 1.1 m · 4 ft
- Length
- 4.1 m · 13 ft
- Weight
- 325 kg · 717 lb
- Found in
- Spain · Talarn
- Food and walking
- Herbivore · Two or four legs
- Kind
- beaked plant-eater · Ornithopod
- Family branch
- Styracosterna
The story in short
Calvarius was formally named in 2022 by A. Prieto-Márquez and A. Sellés. The name honors a person tied to the fossil or its study.
Fossils referred to Calvarius date to the Late Cretaceous (Maastrichtian), roughly 72.2 to 66 million years ago. Finds come from Spain, including the Talarn Formation. It was a herbivore and could move on two or four legs.
Published estimates put Calvarius at a length near 4.1 m, hips about 1.1 m high, and a body mass around 325 kg.
On the family tree it sits in Styracosterna, among the ornithopod dinosaurs.
Close relatives
Bayannurosaurus
Bayannurosaurus perfectus
Early Cretaceous (Aptian) · roughly 121.4 to 113.2 million years ago
Cedrorestes
Cedrorestes crichtoni
Early Cretaceous (Aptian) · roughly 121.4 to 113.2 million years ago
Dakotadon
Dakotadon lakotaensis
Early Cretaceous (Valanginian · Hauterivian · Barremian) · roughly 137.1 to 121.4 million years ago