Species: cretacicus BORSUK-BIALYNICKA, 1990
Etymology:

Holotype: ZPAL MgR-II/4

Locality: Bayan Zag (= Bayn Dzak, Shabarakh Usu GILMORE, 1943), Ömnögov (South Gobi), Mongolia.

Horizon: Djadochta Formation.

Biostratigraphy:

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

Material: Skull with mandibles, posterior part of left mandible missing, pterygods and quadrates strongly damaged.

Referred material:

ZPAL MgR-II/43: Fragmentary skull with mandibles, parietals, braincase and all parts of skull and mandible adjacent to them missing.

ZPAL MgR-II/47: Damaged snout with frontals and fragmentary mandible.