The first occurrence of S. peregrina in equatorial Pacific cores has been tied to above the normal of C3AR (6.2-6.3 Ma, Theyer and Hammond, 1984) to near the C4N/C3AR boundary (Burckle, 1972). This datum appears to be considerably older in the subantarctic. In Hole 704B it is coincident (or nearly so) with the LAD D. hughesi and at Site 594 it occurs slightly below the last LAD D. hughesi and is bracketed by the LAD Discoaster hamatus (8.67 Ma, Backman et al., in press; 8.85 Ma, Berggren et al., 1985) and the FAD Discoaster quinqueramus (7.46 Ma, Backman et al., in press; 8.2 Ma, Berggren et al., 1985). Being only a few meters below the D. quinqueramus datum at Site 594 the age estimates for this datum are employed here with the interpolated age of the S. peregrina falling precisely between these estimates.