Oxygen and carbon isotope measurements on single specimens of Cibicidoides wuellerstorfi in core GIK12329-6 (Meteor 25), sited off Afrika in the East Atlantic Ocean

measured on single specimens with the CARBO KIEL Mass Spectrometer Finnigan MAT 251, C-14 Laboratory, Christian-Albrechts-University, Kiel, GermanyMost specimens smaller than 400µm were "lost".