(Appendix C) Stratigraphic range and relative abundance of Neogene planktonic...
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Species abundance: A = abundant (>25%), C = common (16-24%), F = frequent (6-15%), R = rare (1-5%), - = absent, based on a random sample of 200-400 specimens from the >63...
物种多度分级标准如下:A代表丰富(占比>25%)、C代表常见(占比16%~24%)、F代表频见(占比6%~15%)、R代表稀有(占比1%~5%),“-”表示物种缺失。该分级体系基于从超过63[原文未完整呈现]的样本集中随机抽取的200~400份标本构建。



