In 1976, Barsbold referred six additional specimens to the genus Oviraptor (including IGM 100/20 and 100/21), but these were later reclassified in the new genus Conchoraptor.
Barsbold je 1976. godine dodao još šest primjeraka rodu Oviraptor (uključujući IGM 100/20 i 100/21), ali su oni kasnije reklasifikovani u novi rod Conchoraptor.