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Samples from Site U1313 were washed through a 150 µm sieve, and the residue was split as many times as necessary to obtain an aliquot of between 300 and 600 specimens. Using a stereomicroscope, we identified the planktonic foraminifer specimens following the taxonomic concepts of Kennett and Srinivasan (1983) in order to estimate the relative abundance of those species that are relevant to elaborate the biostratigraphic framework.