Enhanced CaCO3 preservation following the K–Pg boundary. Records of wt.% coarse Fraction (a) from IODP site 1209 [45], DSDP 577 [57], IODP U1403 (this study), IODP 1262 [58] and IODP 1267 (this study). In panel (b), records of fragmentation of planktonic foraminifera from DSDP sites 528 and 577 [59] and IODP site 1209 [28, this study]. Species richness bars above data panels are schematic representations of data from [60,61]. All data are plotted against time (in Ma); for details of the age models used, see electronic supplementary material.