Genus: Haya MAKOVICKY, KILBOURNE, SADLEIR & NORELL, 2011
Etymology: From Sanskrit for the Hindu diety Haryagriva, an avatar of Vishnu characterized by a horse head, in referenc to the elongate and faintly horse-like skull of this dinosaur, and the common depiction of this deity in the Buddhist art of Mongolia.

Species: griva MAKOVICKY, KILBOURNE, SADLEIR & NORELL, 2011
Etymology: From Sanskrit for the Hindu diety Haryagriva, an avatar of Vishnu characterized by a horse head, in referenc to the elongate and faintly horse-like skull of this dinosaur, and the common depiction of this deity in the Buddhist art of Mongolia.

Holotype: IGM 100/2017

Locality: Fluvial, pale red sandstone layer at Khugenetslavkant, Dornogovi (Dorngobi Aimag), Eastern Gobi, Mongolia.

Horizon: Javkhlant Formation (Khugenetslavkant sandstone facies).

Biostratigraphy:

Age: Santonian-Campanian Stage, Senonian Subepoch, Gulf Epoch, Late Cretaceous.
Note: Originaly Late Aptian or Early Albian Stage, Middle Gallic Subepoch, Upper Early Cretaceous Epoch, Early Cretaceous.

Material: A complete, barely distorted skull and anterior cervical series.

Referred material:

IGM 100/1324: Isolated left femur.

IGM 100/2013: Dorsal rib and series of chevrons, an articulated right crus and pes, part of left pes.

IGM 100/2014: A mediolaterally crushed skull and anterior cervical series with hind limb elements.

IGM 100/2015: A nearly complete postcranial skeleton, missing the tip of the tail, the feet, and some manual phalanges.

IGM 100/2016: A juvenile skull missing the snout and postdentary bones.

IGM 100/2018: An isolated mandibular symphysis including the predentary.

IGM 100/2019: A nearly complete skull and skeleton (in preparation).

IGM 100/2020: Postcranial fragments including ribs, femur, tibia and pedal phalanges.