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成冰纪中期的「淮南生物群」是怎样的？ - 知乎
source link: https://www.zhihu.com/question/335027563/answer/749520203
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1.其中的动物实际上现在认为不是动物，而是与一些藻类相关。淮南生物群的碳质压膜宏体化石实际上都是各种…
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