Dutheil, D.B. (1991)
A checklist of Neoselachii (Pisces, Chondrichthyes) from the Palaeogene of the Paris Basin, France. Tertiary Research, 13(1) , 27–36

Aver'yanov, A.O. & Udovichenko, N.I. (1993)
Age of vertebrates from the Andarak locality (southern Fergana). Stratigraphy and Geological Correlation, 1(3), 139–141