†Achelousaurus Sampson 1994 (ceratopsid)
Reptilia - Neornithischia - Ceratopsidae
PaleoDB taxon number: 53956
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
Parent taxon: Pachyrhinosaurini according to M. J. Ryan et al. 2017
Sister taxa: Einiosaurus, Pachyrhinosaurus, Pachyrostra
Subtaxa: Achelousaurus horneri
Ecology: ground dwelling herbivore