(Table 9) Age and depth determination of planktonic foraminifer datums in Ben...
收藏B2FIND2026-04-05 收录
官方服务:
资源简介:
Species abundance: A = abundant (>30%), C = common, (15-30%), F = few (3-15%), R = rare (<3%), X = present, but no abundance estimated, - = absent.
物种丰度(Species abundance)分级规则如下:A代表优势种(丰度占比>30%),C代表常见种(丰度占比15%~30%),F代表稀有种(丰度占比3%~15%),R代表极稀有种(丰度占比<3%),X表示物种存在但未估算其丰度,-表示物种缺失。



