Micropaleontology of the Pennsylvanian Johns Valley shale of the Ouachita Mountains, Oklahoma, and its relationship to the Mississippian Caney shale

The Johns Valley shale of Pennsylvanian age is characterized by an abundance of nepionic cephalopoda, gastropoda, and brachiopoda, bryozoa, ostracoda, conodonts, and formaminifera. The formation is correlated with the lower part of the Pottsville group. The Caney shale, as restricted by Ulrich, consists of concretionary black shale carrying a typical Mississippian fauna. This paper is published in two parts. The first part will describe the calcareous algae, foraminifera, conodonts, bryozoa and ostracoda. The second part will describe the gastropoda, pelecypoda, brachiopoda and cephalopoda. Also a fossil chart will be given showing the ranges of the fossils in other correlative areas.