Species: semiplena ALIFANOV, 1996
Etymology: Latin, semiplenus, “Incomplete.”

Holotype: PIN 3142/319

Locality: Hermiin Tsav (Khermeen Tsav), western Ömnögov (South Gobi), Mongolia.

Horizon: Barun Goyot Formation.

Biostratigraphy:

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

Material: A skull without a series of bones of the skull roof, and a lower jaw.