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horned dinosaur
Agathaumas
Say it like this: “ag-uh-THAW-mus”
Agathaumas sylvestris
Agathaumas ate plants and walked on four legs. It lived in the Late Cretaceous. Bones have been found in the United States.
- When
- Late Cretaceous (Maastrichtian) · roughly 72.2 to 66 million years ago
- Named in
- 1872 · Cope, E. D.
- Hip height
- Not established
- Length
- Not established
- Weight
- Not established
- Found in
- the United States · Lance
- Food and walking
- Herbivore · Four legs
- Kind
- horned dinosaur · Ceratopsian
- Family branch
- Ceratopsidae
The story in short
Agathaumas was formally named in 1872 by E. D. Cope. The name means “much wonder.”
Fossils referred to Agathaumas date to the Late Cretaceous (Maastrichtian), roughly 72.2 to 66 million years ago. Finds come from the United States, including the Lance Formation. It was a herbivore and walked on four legs.
The fossils of Agathaumas are too incomplete for a responsible length, hip height, or weight, so those fields are left blank on purpose.
On the family tree it sits in Ceratopsidae, among the horned dinosaurs.