1.No creditable macrofossil record of the Fagaceae exists in the Cretaceous deposits and all the Cretaceous microfossil reports remain equivocal and require further study.

1.白垩纪尚无壳斗科可靠石记录，微石需要进步研究才能确定亲缘及古新世壳斗科已经分出两个类群。