遇见数据集

(Table 2) Calcareous nannofossils from ODP Hole 133-817A

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PANGAEA1993-01-01 更新2026-04-09 收录
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Species abundances: V (very rare) = <1 specimen per 50 fields (<0.04%), R (rare) = 1 specimen per 11-50 fields (~0.04%-0.2%), F (few) = 1 specimen per 2-10 fields (~0.2%-1%), C (common) = 1-5 specimens per field (~1%-5%), A (abundant) = 6-25 specimens per field (~5%-25%), W (very abundant) = >25 specimens per field (>25%), - = absent.

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1993-01-01
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