(Table 3) Abundance, preservation, and distribution of calcareous nannofossil...
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Species abundance: V = very abundant (>10 specimens per field of view), A = abundant (1-10 specimens per field of view), C = common (1 specimen in 2-10 fields of view), F =...
物种丰度(Species abundance)分级规则如下:V 表示极丰富(每视野内标本量>10),A 表示丰富(每视野内标本量为1~10),C 表示常见(每2~10个视野可见1个标本),F 表示……



