Paleontologic and palynologic analyses of samples from wells on the Grand Banks of Newfoundland have established the presence of sedimentary rocks ranging in age from Holocene to Devonian. Several unconformities have been recognized, at least one of which is major in terms of areal extent and temporal magnitude. Upper Cretaceous and Tertiary rocks were deposited in environments ranging from middle shelf to slope. Early Cretaceous and Jurassic environments are interpreted as ranging from nonmarine to outer shelf. A graphic technique of compositing all available biostratigraphic data has permitted detailed correlation of wells located in three different basins. The data utilized were derived from analyses of foraminifers, ostracodes, calcareous nannoplankton, dinoflagellate , spores, pollen, and rare megafossils. The foundation for future biostratigraphic work has been established.

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