
New Chondrichthyan Spines from the Late Paleozoic of Oklahoma. Journal of Paleontology, 52 (5): 1070–1078

New specimens of xenacanth and hybodont sharks (Elasmobranchii: Xenacanthida and Hybodontoidea) from the Lower Permian of southwestern Oklahoma. Oklahoma Geology Notes, 63 (4): 136–147

Lower Permian Freshwater Sharks and Fishes of Texas and Oklahoma. published by the author himself, 118pp