Figure F12. Correlation of geomagnetic polarity timescale (Berggren et al., 1995a) and biostratigraphic zonations used during Leg 202: calcareous nannofossils (Martini, 1971; Okada and Bukry, 1980), planktonic foraminifers (Berggren et al., 1995b), and diatoms (Barron, 1985a, 1985b; Baldauf and Iwai, 1995).