Holotype:

Locality: In the vicinity of Lago Colhue Huapi, southern Chubut Province, Patagonia, Argentina.

Horizon: Upper Member, Bajo Barreal Formation.

Biostratigraphy:

Age: Campanian- ?Maastrichtian Stage, Upper Senonian Subepoch, Upper Gulf Epoch, Late Cretaceous.

Material: Articulated mandibles.