“…Blow's (1969) zonal scheme, which is widely employed for tropical areas, has been successfully applied to Cenozoic foraminiferal sequences recovered in the tropical Indian Ocean (see reviews by McGowran, 1977;Fleischer, 1977;Vincent, 1977). Blow's zonation, slightly modified by Kennett and Srinivasan (1983) for the Neogene, is used here.…”