(Figure 1) Calcareous nannofossil abundances in ODP Hole 150-905A
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Species abundance: - = not present; r = very rare, R = rare, F = few, C = common, A = abundant, W = very abundant, and ( ) = redeposited. Nannofossil abundance is the number of...
物种丰度（Species abundance）的分级符号说明如下：- 代表未出现；r 代表极罕见；R 代表罕见；F 代表少量；C 代表常见；A 代表丰富；W 代表极丰富；( ) 代表再沉积。超微化石（nannofossil）丰度指的是……的数量。
