He has been on the faculty at OSU since January 1992. He holds graduate degrees from Ohio University (M.S.) and Texas Tech University (Ph.D.). His specialty is ammonoid and conodont biostratigraphy, and sequence stratigraphy. Recent studies include publications on Carboniferous and Lower Permian conodont and ammonoid biostratigraphy, and sequence stratigraphy. He serves as a voting member on the Subcommission of Carboniferous Stratigraphy of the OUGS.