= cf. Pachyrhinosaurus DRUCKENMILLER, ERICKSON, BRINKMA, BROWN & EBERLE, 2021
Locality: Along the Colvillee River, microvertebrate locality (OJsaurus, approximately 9 km downstream of Pediomys Point, Paul's Pearls and Jacob's Bed, less than 1 km further downriver, approximately 100 m apart and are separated by no more than 1 m of vertical stratigraphic section, exact locality data for all three sites is on record with the Bureau of Land Managment Arctic Field Office for qualified researchers), North Slope Borough, Alaska.
Horizon: Prince Creek Formation.
Age: Early Late Maastrichtian Stage, uppermost Senonian subepoch, Gulf Epoch, Late Cretaceous.
UAMES 52467: Tooth of an immature specimen.
UAMES 29413: Tooth of an adult specimen.
UAMES 41664: Maxillary crown of a young-of-the year tooth.
UAMES 51664: Dentary (?) crown of a young-of-the year tooth.
McDONALD & HORNER, 2010
Locality: Canyon Bonebed (CBB), Landslide Butte Field Area, approximately 42 km northwest of Cut Bank, Glacier County, Montana.
Horizon: Two Medicine Formation.
Age: Judithian age, Campanian Stage, Senonian subepoch, Upper Gulf epoch, Late Cretaceous.
MOR 449: Co-ossified nasal section.