PALEOECOLOGY OF COMMENSAL EPIZOANS FOULING FLEXICALYMENE (TRILOBITA) FROM THE UPPER ORDOVICIAN, CINCINNATI ARCH REGION, USA. - Key Jr., Marcus M.; Schumacher, Gregory A.; Babcock, Loren E.; Frey, Robert C.; Heimbrock, William P.; Felton, Stephen H.; Cooper, Dan L.; Gibson, Walter B.; Scheid, Debbie G.; Schumacher, Sylvester A. (Journal of Paleontology, 2010)