[071-17] Lingulid, Rhynchonellid, and Spiriferid Brachiopods from the Shumway Cyclothem, Mattoon Formation, Pennsylvanian of Illinois
Scheihing, Mark H. and Ralph L. Langenheim, Jr. Lingulid, Rhynchonellid, and Spiriferid Brachiopods from the Shumway Cyclothem, Mattoon Formation, Pennsylvanian of Illinois 071-17-print