ABSTRACT
Lithologic and paleontologic data obtained from an exposure of the Kiamichi and Duck Creek formations are recorded for comparison with that from other areas. From these data certain biostratigraphic observations and paleoecologic inferences are made. The evidence obtained from the distribution of the Foraminifera and Ostracoda points to the conclusion that the Duck Creek is the basal formation of the Washita group of the Comanche series. Evidence for the position of the Middle Albian-Upper Albian boundary at the contact of the Kiamichi and Duck Creek formations is presented.
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