Hollinacean and kirkbyacean ostracodes are rare to abundant components of the ostracode faunas in the Pennsylvanian marine units of the Appalachian Basin. The diversity of these two groups appears lower in the Appalachian Basin than as reported from the Eastern Interior Basin. Thirty-six taxa, nine hollinelliid and 27 kirkbyiid, are identified. Three new species, Amphissites (Amphikegelites) sohni, Kegelites cooperi, and Kirkbya causa, are proposed.
Kirkbyaceans from the Morrowan–Atokan portion of the section compare favorably with those described from the Eastern Interior Basin. The Shleesha rothi Zone of the Eastern Interior Basin can be recognized in the Appalachian Basin, comprising Morrowan and Atokan units. Desmoinesian units in the Appalachian Basin contain many taxa extending up from the Atokan, but several new forms appear. Of the latter, Kegelites cooperi is the most diagnostic species and is the name bearer for the Kegelites cooperi Zone. Missourian–Virgilian faunas are significantly different from those in the Desmoinesian, but are not separable from each other. These units are grouped together into the Kegelites dattonensis Zone.