Lund, R. (1989)
New petalodonts (Chondrichthyes) from the Upper Mississippian Bear Gulch Limestone (Namurian E2b) of Montana. Journal of Vertebrate Paleontology, 9(3), 350–368
DOI: 10.1080/02724634.1989.10011767

Ginter, M. & Hampe, O. & Duffin, C.J. (2010)
Handbook of Paleoichthyology, Vol. 3D: Chondrichthyes Paleozoic Elasmobranchii: Teeth Verlag Dr. Friedrich Pfeil, pp. 168, 154 fig., 4 Tab.

Ciampaglio, C.N. & Cicimurri, D.J. & Deuter, L.H. & Taylor, M.A. (2012)
A review of the Chondrichthyans from the Mississippi System of Northern Alabama, USA. Bulletin of the Alabama Museum of Natural History, 28, 67–80

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