Harlton, B.H. (1933)
Micropaleontology of the Pennsylvanian Johns Valley shale of the Ouachita Mountains, Oklahoma, and its relationship to the Mississippian Caney shale. Journal of Paleontology, 7(1), 3–29
Johnson, G.D. (2005)
An unusual tricuspid chondrichthyan tooth from the Lower Permian of Texas, USA. Revista Brasileira de Paleontologia, 8(2), 159–164
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.