PETERMANN & LYSON, 2025

Locality: DMNH Loc.3648, 60 km east of Denver, Denver County, Denver Basin, Colorado

Horizon: Hell Creek Formation.

Biostratigraphy:

Age: Lancian age, upper Maastrichtian Stage, uppermost Senonian subepoch, Upper Gulf Epoch, Late Cretaceous.

Material:

DMNH EPV.141563: Maxilla.

DMNH EPV.57445: Dentary.