"Nazlet Khater 2 skeleton possesses two plesiomorphic features in its mandible, which are not found among coeval, anatomically modern humans. This suggests that the ancestors of the specimen may have interbred with neighboring late archaic humans. " NK2古人的下颌骨所具有的两处原始特征在同时期的解剖学现代人中并没有被发现,这表明NK2古人的祖先可能与邻近的古老型人类发生过混血。