Figure F8. Eocene–Holocene calcareous nannofossil zones and datums, Expedition 317, modified after Martini (1971) and the geomagnetic polarity timescale of Ogg et al. (2008). Black bars = normal polarity, white bars = reversed polarity. LO = last occurrence, HO = highest occurrence, HCO = highest common occurrence, LRO = lowest regular occurrence, LCO = lowest common occurrence, X = crossover event (i.e., the co-occurrence of two marker species), AE = acme end. A. 0–20 Ma. (Continued on next page.)
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