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An Albian to Maestrichtian planktonic foraminiferal biozonation for the Exmouth Plateau is proposed, based on the detailed analysis of pelagic successions at Sites 761 and 762 and correlation with Site 763. Twelve zones and two subzones are recognized. The Albian and Cenomanian zones, currently only three, can probably be subdivided into several more. The ranges of the Tethyan index species Globotruncana ventricosa and Globotruncanita elevata are discussed and found to differ from the ones usually given in standard zonal schemes. The planktonic foraminiferal succession is interpreted as a mid-latitude one in which the Tethyan influence started suddenly in the late Albian and then fluctuated throughout the Late Cretaceous, with a long low-diversity interval during the Campanian to middle Maestrichtian.

Cretaceous Planktonic Foraminiferal Biostratigraphy, Leg 122, Exmouth Plateau, Australia