Abstract
The lateral distributions of Cenozoic dinoflagellate cyst species in Scotian Shelf-Grand Banks wells, and elsewhere in the North Atlantic region show distinct geographic patterns that may be attributable to ecologic factors. Eocene-Oligocene species of Areosphaeridium and Distatodinium are selected to demonstrate these patterns. Lateral variations in the stratigraphic ranges of certain other Cenozoic species in the North Atlantic are attributed in part to water temperature differences, probably resulting from oceanic currents. Such examples confirm the potential of fossil dinoflagellate cysts as indicators of paleoceanographic parameters.
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