Nannofossil abundance of Hole 6-57
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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)
相对丰度分级说明如下:D为优势种(dominant),A为丰富种(abundant),C为常见种(common),F为偶见种(few),R为稀有种(rare),T为痕量种(trace),P为存在种(present);其中数值形式的丰度均以百分比表示。



