Pennsylvanian Morrowan Rocks and Fusulinids of Kansas

Abstract

Subsurface pre-Desmoinesian Pennsylvanian rocks of Kearny County, southwestern Kansas, are named the Kearny formation, and, mainly on the basis of their fusulinid faunas, they are referred to the Morrowan series. Four species and one variety of fusulinids from the type section of the Kearny formation are described and illustrated as Millerella marblensis Thompson, M. pressa, n. sp., M. pinguis, n. sp., M.? advena n. sp., and M.? advena var. ampla, n. var. Also, the fusulinid fauna from the type section of the Morrowan series at Morrow, Arkansas, is here described and illustrated for the first time. All four of the species of fusulinids, and possibly the variety, present in the Kearny formation in Kansas are also recognized in Morrowan rocks of Arkansas.