Malyshkina, T.P. & González-Barba, G. & Bannikov, A.F. (2013)
Records of Elasmobranchian Teeth in the Bartonian of the Northern Caucasus (Russia) and Crimea (Ukraine). Paleonotological Journal, 47(1), 98–103
DOI: 10.1134/S0031030113010085