(Figure 2) Distribution of upper Eocene-lower Oligocene sponge spicules from ...
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资源简介:
Abundance: A = abundant, C = common, F = few, R = rare, - = absent.
丰度(Abundance):A代表丰富(abundant),C代表常见(common),F代表少量(few),R代表稀有(rare),符号"-"代表缺失(absent)。



