(Table 3) Distribution of Cretaceous nannofossils at DSDP Hole 79-547A
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Species abundance: D = very abundant (10 or more specimens per field of view)), A = abundant (6-9 specimens per field), V = very common (3-5 specimens per field)), C = common (1...
物种丰度（Species abundance）：D为极丰富（每视野内标本数≥10个），A为丰富（每视野内标本数6~9个），V为非常常见（每视野内标本数3~5个），C为常见（每视野内标本数1……）
