(Table 4) Distribution of Miocene-Pleistocene calcareous nannofossils in ODP ...
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Species abundances: V = very abundant (>10 specimens per field of view), A = abundant (1-10 specimens per field of view), C = common (1 specimen per 2-10 fields of view), F =...
物种丰度分级标准如下:V为极丰富(very abundant,单视野内标本数量>10),A为丰富(abundant,单视野内标本数量为1~10),C为常见(common,每2~10个视野可见1份标本),F为……



