Holotype: Hayashibara Museum of Natural History, Japan.

Locality: Üüden Sair (Ulaan Sair, Udan Sayr), Ömnögov, Mongolia.

Horizon: Djadochta Formation.

Biostratigraphy:

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

Material: Disarticulate skull.