Itano, W.M. & Houck, K.J. & Lockley, M.G. (2003)
Ctenacanthus and Other Chondrichthyan Spines and Denticles from the Minturn Formation (Pennsylvanian) of Colorado. Journal of Paleontology, 77(3), 524–535
DOI: 10.1666/0022-3360(2003)077<0524:CAOCSA>2.0.CO;2