Figure F1. A. The ¹⁸O record of benthic foraminifer Cibicides wuellerstorfi as a function of depth in Hole 1075A. B. The ¹⁸O record of C. wuellerstorfi as a function of age in Hole 1075A. PDB = Peedee belemnite. Bold numbers 1, 5, 7, 9, 11, and 13 = marine isotope stages.