(Table 7) Nannofossil and foraminifer datum events of ODP Leg 121 holes

The ages of the Turonian-Maestrichtian nannofossil datums are not well constrained and are only roughly estimated from correlations with the time scale of Kent and Gradstein...土仑期-马斯特里赫特期（Turonian-Maestrichtian）超微化石（nannofossil）定年基准点的年龄约束不足，仅能通过与Kent和Gradstein的地质年代标尺进行相关性对比，得到粗略估算结果。