(Figure 2) Distribution of dinoflagellate cysts in the mid-Cretaceous of ODP ...
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Species abundance: A = >100, C = 21-100, F = 5-20, R = 1-4 specimens, - = absent
物种丰度(Species abundance)分级标准如下:A对应标本量>100,C对应21~100,F对应5~20,R对应1~4,符号“-”表示该物种缺失。



