Figure F9. Combined geomagnetic polarity time scales of Berggren et al. (1985a, 1985b) and Berggren et al. (1995) with the biostratigraphic zones used during Leg 178. The diatom zonation is based mainly on Harwood and Maruyama (1992), as well as Leg 177 results. Standard calcareous nannofossil zonations are from Martini (1971) and Okada and Bukry (1980). Radiolarian zonation is from Lazarus (1992).