The problem of vast numbers of cladodont shark denticles in the Pennsylvanian Excello Shale of Pike County, Indiana. Journal of Paleontology, 69(3), 556–563
The internal tooth morphology of some palaeozoic elasmobranchs [Abstract]. Abstr. 9th Internatl. Symp. Early Vertebrates/Lower Vertebrates, Flagstaff, Arizona, USA, May 2000, p. 11.
