Wellburn, E.D. (1901)
On the fish fauna of the Millstone Grits of Great Britain. Geological Magazine, 8(5), 216–222
DOI: 10.1017/S0016756800156365

Wellburn, E.D. (1903)
On some new species of fossil fish from the Millstone Grit rocks, with an amended list of genera and species. Proceedings of the Yorkshire Geological and Polytechnic Society, 15, 70-78
DOI: 10.1144/pygs.15.1.70

Itano, W.M. & Houck, K.J. & Lockley, M.G. (2000)
Chondrichthyans from the pennsylvanian Minturn Formation of Colorado [Abstract]. Abstr. 9th Internatl. Symp. Early Vertebrates/Lower Vertebrates, Flagstaff, Arizona, USA, May 2000, p. 11.

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

Schnetz, L. & Dunne, E.M. & Feichtinger, I. & Butler, R.J. & Coates, M.I. & Sansom, I.J. (2024)
Rise and diversification of chondrichthyans in the Paleozoic. Paleobiology, in press
DOI: 10.1017/pab.2024.1