Holotype: TMM 42489-1
Locality: Big Bend National Park, Trans-Pecos, Brewster County, Texas.
Horizon: Lower Javelina Formation.
Biostratigraphy:
Age: Maastrichtian Stage, Upper Senonian Subepoch, Upper Gulf Epoch, Late Cretaceous.
Material: Fragmentary skull and mandible, cervical vertebrae.