Hodnett, J.-P.M. & Elliott, D.K. & Olson, T.J. (2013)
A new basal hybodont (Chondrichthyes, Hybodontiformes) from the Middle Permian (Roadian) Kaibab Formation, of northern Arizona. New Mexico Museum of Natural History and Science, Bulletin, 60, 103–108

Hodnett, J.-P.M. & Elliott, D.K. & Olson, T.J. & Wittke, J.H. (2012)
Ctenacanthiform sharks from the Permian Kaibab Formation, northern Arizona. Historical Biology, 24(4), 1–15
DOI: 10.1080/08912963.2012.683193

Elliott, D.K. & Irmis, R.B. & Hansen, M.C. & Olson, T.J. (2004)
Chondrichthyans from the Pennsylvanian (Desmoinesian) Naco Formation of central Arizona. Journal of Vertebrate Paleontology, 24(2), 268–280
DOI: 10.1671/1978