Figure F11. Latest Cretaceous through earliest Paleogene ¹³C records from DSDP Site 528 (after D'Hondt et al., 1998). Magnetostrat. = magnetostratigraphy. K/P = Cretaceous/Paleogene boundary. Open symbols = ¹³C differences between near-surface planktonic foraminifers and benthic foraminifers. Solid symbols = ¹³C differences between deeper-dwelling planktonic and benthic foraminifers. The benthic foraminifers are Gavelinella and Nuttallides. The planktonic foraminifers are Morozovella angulata (open triangles), Praemurica taurica (open circles), Eoglobigerina eobulloides (solid circles), Rugoglobigerina rotundata (open squares), Pseudotextularia elegans (solid squares), and Heterohelix rajagopalani (solid triangles). A. ¹³C differences between fine (ff; <25 µm) carbonate and benthic foraminifers (bf). B. ¹³C differences between planktonic (pf) and benthic foraminifers. C. ¹³C differences between near-surface planktonic foraminiferal species and the deepest dwelling (thermocline) planktonic species (calculated by subtracting ¹³C values of the latter from those of the former). The deepest dwelling planktonic species are H. rajagopalani (Cretaceous) and E. eobulloides (Paleogene).