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1.The boundaries between the Upper Cretaceous and Paleogene, Paleocene and Eocene, and Eocene and Oligocene in China nearly accord with corresponding ones elsewhere in the world.
其中,白垩系-古近系界线、古新统-始新统界线和始新统-渐新统界线与国际上相应界线接近或一致。收藏指正
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