The upper cretaceous and paleogene are of continental sediments in henan province , and the boundary between them considered to be unconformable or disconformable because of the very difference in sedimentation and biological assemblages 摘要河南省上白垩统与古近系均为陆相沉积，在全省范围内，两者间呈假整合或不整合接触，在沉积特征上显示出较大的差异，在古生物群的演化方面，也各自具有不同的特色。
