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在我国陆架表层和柱状沉积中不但含有丰富的孢粉、硅藻，而且还有很多其它藻类，如刺球藻、甲藻、椭球藻等从在沉积物中分布状况的分析，我们清楚地看到，虽然刺球藻、椭球藻在分类系统中的地位尚不清楚，但它们都是海生藻类．刺球藻的形体随着水深增大而变大，它们不仅可指示海相环境，而且可根据不同类型的刺球藻数量推测古水深．椭球藻喜生于温带－亚热带中北部水深大于４０ｍ的海域．多甲藻在水深较大的暧水环境数量较多．它们具有重要的古环境意义．
In China’s surface layer and columnar sediments are not only rich in sporo-pollen, diatoms, but also many other algae, such as cillosphaeria, dinoflagellates, ellipsoid, etc. from the sediment distribution analysis, we clearly See, although the position of the spirulina, ellipsoid in the classification system is not clear, but they are marine algae. The shape of the spirulina plateaus becomes larger as the water depth increases. They not only indicate the marine environment, but also can infer ancient water depth according to the different types of spirulina. The ellipsoid algae is born in the temperate - subtropical north of the water depth of more than 40m of the sea. More dinoflagellates in a larger number of larger warm water environment. They have important paleo-environmental implications.