Zidek, J. (1978)
New Chondrichthyan Spines from the Late Paleozoic of Oklahoma. Journal of Paleontology, 52(5), 1070–1078
Zidek, J. & Johnson, G.D. & May, W. & Claborn, A. (2004)
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
Davis, K. (2014)
Lower Permian Freshwater Sharks and Fishes of Texas and Oklahoma. published by the author himself, 118pp