Dica, E.P. & Ciobanu, R. & Codrea, V. (1996)
Some new Batoids (Pisces, Chondrichthyes) from the Late Eocene (Priabonian) of Cluj-Napoca area. Studia Universitatis Babeş–Bolyai, Geologia, 41(2): 127–130
Clayton, A.A. & Ciampaglio, C.N. & Cicimurri, D.J. (2013)
An inquiry into the stratigraphic occurrence of a Claibornian (Eocene) vertebrate fauna from Covington County, Alabama. Bulletin of the Alabama Museum of Natural History, 31(2): 60–73