Fig. S1.

Representative tooth-size histograms and ichthyolith assemblages from the South Pacific (DSDP Site 596). Histograms represent relative abundance of each tooth size class from the Late Cretaceous to the early Eocene. Note that the relative abundance of small teeth (<1 mm) decreases from the Late Cretaceous to the early Paleocene, and again from the late Paleocene to the early Eocene. The presence (and abundance) of large teeth (>1 mm) increases at the K/Pg boundary; into the early Eocene, small teeth become more abundant, and the large teeth are still present. (White scale bar, 1 mm.)