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.