(Table 5) Occurrence chart of Paleogene diatom species in DSDP holes 23-219 a...
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species abundance: S = singel (<0.1%), R = rare (0.1%-1.0%), F = frequent (1%-10%), C = common (10%-30%), A = abundant (30%-50%), D = dominant (>50%), - = absent
物种丰度(species abundance)分级标准如下:S = 极稀有(singel,占比<0.1%),R = 稀有(rare,0.1%~1.0%),F = 较常见(frequent,1%~10%),C = 常见(common,10%~30%),A = 丰富(abundant,30%~50%),D = 优势种(dominant,占比>50%),- = 缺失(absent)



