Figure F3. Mapping between the coiling ratio of Neogloboquadrina pachyderma (dextral/sinistral) and the top #2 Globigerina inflata bed at Site U1427 (this study), ODP Site 798 (Kheradyar, 1992), and Core V20-119 (Maiya et al., 1976). The three datums of the N. pachyderma coiling ratio are (A) younger peak, (B) older peak, and (C) significant drop in the ratio. B/M = Brunhes/Matuyama.
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