Planktic foraminifera abundance of Hole 73-520
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https://b2find.eudat.eu/dataset/015e3dd8-0a59-5dc1-8f7e-72df25a5f8fe
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Relative abundance: D = dominant, A = abundant, C = common, F = few, R = rare, T = trace, P = present (numerical values are abundance in percent)
相对丰度分级标准如下:D为优势级(dominant),A为丰富级(abundant),C为常见级(common),F为少量级(few),R为稀有级(rare),T为痕量级(trace),P为存在级(present);补充说明:若以数值形式表征丰度,则丰度数值以百分比为单位。



