Simplify the following text for a Grade 12 native English-speaking person.
Original: 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 .
Simplified: In 1976 , Barsbold referred six additional specimens to the genus Oviraptor , but these were later reclassified in the new genus Conchoraptor .