(Table 2) Distribution of Eocene to Paleocene calcareous nannofossils in ODP ...
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Species abundances: A = abundant (>30 %), C = common (30-15 %), F = few (15-3 %), R = rare (<3%), - = not present.
物种丰度(Species abundances)分级规则如下:A = 优势种(>30%),C = 常见种(30%~15%),F = 偶见种(15%~3%),R = 稀有种(<3%),“-” = 物种不存在。



