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

Ivanov, A.O. & Nestell, M.K. & Nestell, G.P. & Bell, G.L. (2020)
New fish assemblages from the Middle Permian from the Guadalupe Mountains, West Texas, USA. Palaeoworld, 29(2), 239–256
DOI: 10.1016/j.palwor.2018.10.003

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.

Hunt, A.P. & Lucas, S.G. & Santucci, V.L. & Elliott, D.K. (2005)
Permian vertebrates fossils of Arizona. New Mexico Museum of Natural History and Science, Bulletin, 29, 10–15

Hansen, M.C. (1986)
Microscopic chondrichthyan remains from Pennsylvanian marine rocks of Ohio and adjacent areas. Unpublished PhD thesis, Ohio State University, Columbus, Ohio. 2 vols. 514pp.

Gunnell, F.M. (1933)
Conodonts and fish remains from the Cherokee, Kansas City, and Wabaunsee groups of Missouri and Kansas. Journal of Paleontology, 7(3), 261–297