Figure F5. Neogene time scale and biostratigraphic datums used during Leg 183 for Broken Ridge Site 1141 (after Kennett and Srinivasan, 1983; Berggren et al., 1995; Erba et al., 1995). The temperate Miocene planktonic foraminifer zonation is adopted from Kennett and Srinivasan (1983). Dashed lines between zones represent uncertain datums scaled to the low-latitude zonation and time scale of Berggren et al. (1995). T = top/last occurrence, B = base/first occurrence.