(Table 1) Distribution of planktonic foraminifera in the upper Turonian-lower...
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Abundances: AA = very abundant (dominant); A = abundant (>50 %); C = common (15-30 spedimens); F = few (5-15 specimens); R = rare (2-5 specimens); VR = very rare (1...
丰度分级：AA = 极丰富（优势类群）；A = 丰富（占比＞50%）；C = 常见（15~30份标本）；F = 稀少（5~15份标本）；R = 罕见（2~5份标本）；VR = 极罕见（2……
