Dinosaur: Achelousaurus horneri
| Length*: | 6 m | 19.7 ft |
| Weight*: | 2.6 tons | 5,732 lb |
*The largest known specimen
Period
Epoch: Late Cretaceous
Stage: Late Campanian
Details
Status: valid
Autor: Sampson
Year: 1995
Area: North America
Country: USA
Region: Montana
Formation: Two Medicine
Other
Material: At least 4 individuals (skulls and also postcranial fragments).
References: Sampson, S. D. (1995). "Two new horned dinosaurs from the upper Cretaceous Two Medicine Formation of Montana; with a phylogenetic analysis of the Centrosaurinae (Ornithischia: Ceratopsidae)"
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