Species: mengi NESOV, 1992
Etymology:

Holotype: PO 4602

Locality: Site CBI-52, of Dzhyrakuduk, (10 meters above the main level of site CBI-14), Novi District, Bukhara Province, Uzbekistan.

Horizon: Upper part of the Bissekty Formation.

Biostratigraphy:

Age: Coniacian Stage, Lower Senonian Subepoch, Lower Gulf Epoch, Late Cretaceous.

Material: 3 synsacra and other fragments.

Referred material:

PO 4622: 2 anterior sacaral vertebrae.

PO 4623: Cranial portion of a synsacrum.