Genus: Irenosaurus EFIMOV, 1988
Etymology:

Species: egloni (EFIMOV, 1983) EFIMOV, 1988
Etymology:
= Tchoiria egloni EFIMOV, 1983

Holotype: PIN 3386/2

Locality: 60 km south west of Choir, in the Middle Gobi Aimag Hüren Dukh (Khuren Dukh), Dundgov Aimak (Middle Gobi), Southeastern Mongolia

Horizon: Dzun-Bayin Formation, Huhteeg Gorizont, Zuubayan Svita.

Biostratigraphy:

Age: Aptian/Albian Stage, Middle Gallic Subepoch, Upper Early Cretaceous Epoch, Early Cretaceous.
Note: Large lake deposit.

Material: Fragmentary postcranial skeleton.