(Table 2) Distribution of calcareous nannofossils in Cretaceous sediments rec...
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Sediment depth is given in mbsf. Species abundance: V = very abundant (more than 10 specimens per field of view), A = abundant (1-10 specimens per field of view), C = common (1...
沉积物深度以米海底以下（meters below sea floor, mbsf）为单位。物种丰度分级如下：V代表极丰富（每视域内标本量超过10个），A代表丰富（每视域内标本量为1~10个），C代表常见（1……
