Reptilia - Ornithischia - Ceratopsidae
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
Belongs to Achelousaurus according to P. Dodson et al. 2004
See also Currie et al. 2008, Delcourt 2018, Farke et al. 2011, Hieronymus et al. 2009, Horner et al. 2001, Longrich 2010, McDonald 2011, McDonald and Horner 2010, Sampson 1994, Sampson 1995, Trexler 2001 and Vickaryous and Ryan 1997
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
Distribution:
• Cretaceous of United States (2: Montana collections)
Total: 2 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.