Planktonic foraminifer oxygen isotopic composition, Mg/Ca ratio, and conversion to seawater oxygen isotopic composition from Site 999

Early Pliocene oxygen isotopic composition and Mg/Ca ratios of Trilobatus sacculifer from ODP Site 165-999A (Haug et al., 2001; Groeneveld and Tiedemann, 2005), and recalculated sea surface temperature and oxygen isotopic composition of seawater using PSU Solver (Thirumalai et al., 2016).