蒙古科学院
The holotype specimen IGM 100/29 (Mongolian Academy of Sciences, Ulan Bator, Mongolia) consists of an almost complete and articulated but compressed skeleton, lacking only portions of the pectoral girdle, pelvic girdle, and hindlimbs. It was recovered in the Dundgovi Aimag (Eastern Gobi Province), from an exposure of the Shinekhudag Formation now part of the Khuren Dukh Formation which dates to the Mid-Late Albian Other dinosaurs collected from the Shinekhudug Formation in Dundgovi include the ceratopsian "Psittacosaurus mongoliensis".