Figure F8. Correlation of geomagnetic polarity timescale (Cande and Kent, 1995), biostratigraphic zonation, and biohorizons used during Expedition 306. FO = first occurrence, FaO = first abundant occurrence, FcO = first common occurrence, FrO = first rare occurrence, LO = last occurrence, LcO = last common occurrence, Bm = morphotypic first appearance. s = sinistral, d = dextral.
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