Carbonate production of planktic foraminifers at IODP Site 342-U1409, ODP Site 198-1209 and ODP Site 183-1135 during the Palaeocene-Eocene Thermal Maximum (PETM)

Here we present data which explores how foraminiferal carbonate production changed at an Atlantic, Pacific and Southern Ocean site in response to environmental change during the Palaeocene-Eocene Thermal Maximum (PETM; 56 Ma). We measure the 95th percentile of planktic foraminiferal assemblage test size (µm), size-normalised weight (µg) of Morozovella subbotinae and Subbotina patagonica, coarse fraction percent (%; i.e. the relative contribution of planktic foraminifers to carbonate), and foraminiferal mass accumulation rate (g/cm²/ka) at IODP Site 342-U1409, ODP Site 198-1209, and ODP Site 183-1135.