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本文依据内蒙古自治区开鲁盆地的藻类演化特征，从下到上划分为５个藻类组合，对藻类组合的时代、藻类产出层位的沉积环境作了讨论。
According to the characteristics of algae evolution in the Kai Lu basin of Inner Mongolia Autonomous Region, this article divides into five algae combinations from bottom to top, and discusses the sedimentary environment of algae-producing horizon in the era of algae assemblage.