PaleoDB taxon number: 53955
Alternative combination: Achaelousaurus horneri
Full reference: S. D. Sampson. 1994. Two new horned dinosaurs (Ornithischia: Ceratopsidae) from the Upper Cretaceous Two Medicine Formation, Montana, USA. Journal of Vertebrate Paleontology 14(3, suppl.):44A
Sister taxa: none
Type specimen: MOR 485. Its type locality is Landslide Butte Field Area (MOR TM-060), which is in a Campanian terrestrial siltstone in the Two Medicine Formation of Montana.
Ecology: ground dwelling herbivore