Figure F17. Rank abundance of planktonic foraminifer datum species and neritic and coastal diatoms, Site U1418. Planktonic foraminifers: Neoglolobigerina inglei and Neoglolobigerina kagaensis. See text for details. Black bars in the Biozone columns show the uncertainty in the depths of the observed biohorizons. The number within the black bars indicates the age of the biozone boundary. JM = Jaramillo. NPD = Neogene North Pacific Diatom zone of Yanagisawa and Akiba (1998), CM = California margin. Abundance: D = dominant, A = abundant, C = common, F = few, R = rare, P = present, X = present.
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