(Figure 7) Distribution of Cretaceous planktonic foraminifers and associated organisms from DSDP Hole 77-540@en
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Species abundance: A = abundant, AF = frequent, C = common, F = few, R = rare, small case letters = reworked, cf. = confirm, ? = presence is questionable, - = absent.
物种丰度(Species abundance)分级标准如下:A 对应丰盛(abundant),AF 对应常见(frequent),C 对应普遍(common),F 对应稀少(few),R 对应稀有(rare);小写字母表示经改造(reworked);cf. 表示需确认;?表示存在存疑;- 表示缺失(absent)。
创建时间:
2026-04-08



