Figure F2. Timescale used for IODP Expedition 320/321 with calcareous nannofossil and planktonic foraminifer zones and datums through the interval 0 to 60 Ma. Underlined species are foraminifers. B = base, T = top, Tc = top common, Bc = base common, Br = base reentrance, X = abundance cross-over in nannofossils or a coiling change in planktonic foraminifer, s.l. = sensu lato. Subgenera within the genus Globorotalia (Gr.) are shown in parentheses, e.g., Gr. (Truncorotalia) tosaensis. A. 0–10 Ma. (Continued on next three pages.)
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