Species: aenigmatoides BORSUK-BIALYNICKA & MOODY, 1984
Etymology:

Holotype: ZPAL MgR-III/35

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

Horizon: Barun Goyot Formation, = Red Beds of Khermeen Tsav.

Biostratigraphy:

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

Material: Fairly complete skull with both mandibles, dorsal dermocranial elements lacking.

Referred material:

GAO & HUO, 1995

Locality: Bayan Mandahu, Urad Houqi, Inner Mongolia, China.

Horizon: Djadochta Formation.

Biostratigraphy:

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

Material:

IVPP V10039: A left mandibular ramus with post-dentary part missing.