Sturgeon, M. T.; Hoare, R. D. (1968). Pennsylvanian brachiopods of Ohio. <em>State of Ohio, Department of Natural Resources, Division of Geological Survey.</em> Bulletin 63: 1-95, plates 1-22.[details]
original descriptionSturgeon, M. T.; Hoare, R. D. (1968). Pennsylvanian brachiopods of Ohio. <em>State of Ohio, Department of Natural Resources, Division of Geological Survey.</em> Bulletin 63: 1-95, plates 1-22.[details]