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A detailed δ¹⁸O and δ¹³C stratigraphy has been generated from analysis of well-preserved Albian–early Maastrichtian foraminifera from Deep Sea Drilling Project (DSDP) Sites 511 and 327 (Falkland Plateau; ≈58° S–62° S paleolatitude) in the southern South Atlantic, and Cenomanian and Coniacian–Santonian foraminifera from DSDP Site 258 (Naturaliste Plateau; ≈58° S paleolatitude) in the southern Indian Ocean. These results, when combined with previously published Maastrichtian stable isotope data from Ocean Drilling Program (ODP) Site 690 (Weddell Sea, ≈65° S paleolatitude), provide new insight into the climatic and oceanographic history of the southern high latitudes during middle–Late Cretaceous time. The planktonic foraminifer δ¹⁸O curves reveal a gradual warming of surface waters from the Albian through the Cenomanian followed by extremely warm surface waters from the Turonian …