Figure F42. Variations of rank abundances of paleoenvironmental indicators, Site U1418. Planktonic foraminifers include Globigerina bulloides and Globigerina umbilicata integrate. Abundance: D = dominant, A = abundant, C = common, F = few, R = rare, P or X = present, B = barren. Black bars = potential depth where the observed biohorizons occurred. JM = Jarmillo.
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