Genus: Ravjaa OKOSHI, TAKASAKI, CHIBA, NATORI, SANEYOSHI, TAKAHASHI, KODAIRA, HAYASHI, ISHIGAKI, MAINBAYAR & TSOGTBAATAR, 2025
Etymology: Derived from the 5th Noyon Khutugt Iama of the Gobi Dulduityn Danzanravjaa, the famous Buddhist scholar who was deeply respected by people in the Dornogobi region, where this specimen was unearthed. Given the genus name "Ravjaa"originates from the personal name of a male figure, it shoudl be considered masculine.

Species: ishiii OKOSHI, TAKASAKI, CHIBA, NATORI, SANEYOSHI, TAKAHASHI, KODAIRA, HAYASHI, ISHIGAKI, MAINBAYAR & TSOGTBAATAR, 2025
Etymology: In honor of Ken-ichi, Ishii, the director fo Hayashibara Museum of Natural Sciences, Okayama, Japan, for his leading role in the Japanese team of the Mongoli-Japan joint expedition, which tremendously contributes to Mongolian paleontology.

Holotype: MPC-M 100s/001

Locality: Bayan Shiree, located approximately 25 km southwest of Dzuunbayan, Dornogov, Mongolia.

Horizon: bayanshiree Formation.

Biostratigraphy:

Age: Cenomanian Stage, Late Gallic Subepoch, earliest Gulf Epoch, Middle Cretaceous-Santonian Stage, Middle Senonian Stage, Early Late Cretaceous.

Material: Partial right dentary with a distal portion of the ultimate premolar, damaged m1, and well-preserved m2-3.