Species: dobsoni GREGORY & SIMPSON, 1926
Etymology:

Holotype: AMNH 21702

Locality: Bayan Zag (Shabarkh Usu) Gobi Desert, Mongolia.

Horizon: Djadochta Formation.

Biostratigraphy:

Age: Middle Campanian Stage, Senonian Subepoch, Gulf Epoch, Late Cretaceous.

Material: Complete anterior portion of skull and lower jaws, broken off just back of M3/3.