This is a data supplement (Dataset A) to the paper "Microfossil evidence for trophic changes during the Eocene–Oligocene transition in the South Atlantic (ODP Site 1263, Walvis Ridge)" by Bordiga et al., 2015a (https://doi:10.5194/cp-11-1249-2015). Note that data are tabulated against depth in core (meters composite depth, mcd). Please refer to Table 1 in Bordiga et al. (2015) for age-depth model. Dataset A. Calcareous nannofossil census data (ODP Site 1263) One file (ODP 1263 dataset A_Bordiga et al. 2015.xls) containing: Sample information; Raw counts, relative (%) and absolute abundances (N/ g) of all species and size-based groups detected (as illustrated in Figure S2 of the original publication).

Analyses were funded by the Swedish Research Council (VR grant 2011-4866 to J.H.)