Nannofossil abundance of Hole 3-21A
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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:D=优势(dominant)、A=丰富(abundant)、C=常见(common)、F=少量(few)、R=稀有(rare)、T=痕量(trace)、P=存在(present)(数值为百分比形式的丰度)



