(Table 5) Distribution of late Eocene calcareous nannofossils in ODP Hole 149...
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Species abundance: V = very abundant (> 10 specimens per field of view, A = abundant (1 to 10 specimens per field), C = common (1 specimen per 2 to 10 fields), F = few (1...
物种丰度（Species abundance）：V = 极丰富（单视野内标本量＞10个），A = 丰富（单视野内标本量为1~10个），C = 常见（每2~10个视野内可见1个标本），F = 稀少（1...
