(Table 3) Occurence of stratigraphically important diatoms in latest Oligocen...
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Abundance: A = abundant, C = common, F = few, R = rare, r = reworked.
丰度分级:A代表丰富(Abundant),C代表常见(Common),F代表少量(Few),R代表稀有(Rare),r代表再沉积(Reworked)。



