Abstract

An occurrence of Pennsylvanian upper Virgilian or lower Wolfcampian fusulinids is described from the Minnelusa formation in the northern Black Hills. Two additional fusulinid zones are reported from the same formation of the southern Hills. In addition, 2 conodont faunas are described and illustrated. These fossiliferous horizons, together with previously reported fossils, indicate that the Pennsylvanian portion of the Minnelusa is much thinner than has previously been reported.

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