Species: ostromi OSMOLSKA, 1996
Etymology: In honor of John H. Ostrom.

Holotype: ZPAL MgD-I/108

Locality: Northern Sayr, Nemegt, Ömnögov, Mongolia.

Horizon: Nemegt Formation.

Biostratigraphy:

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

Material: Mandible and fragmentary skeleton.