Genus: Tsagantegia TUMANOVA, 1993
Etymology: From Tsagan-Teg Locality.

Species: longicranialis TUMANOVA, 1993
Etymology: Latin, longus, “long”, and Latin, cranium, “skull”: Long skull.

Holotype: GI SPS N 700/17

Locality: Tsagan-Teg, Southeastern Gobi, Mongolia.

Horizon: Bayn Shiree Formation.

Biostratigraphy:

Age: Cenomanian-Turonian Uppermiddle-Upper Gallic Subepoch, Lower Gulf Epoch, Late Cretaceous.

Material: Skull.