LYAPIN, V.R. & BAGIROV, S.V. (2014)
The first record of Copodus Davis, 1883 (Chondrichthyes, Copodontiformes) from the Steshevian Regional Stage (Serpukhovian, Lower Carboniferous) of the Moscow Region. Paleontological Journal, 48 (10): 1045–1059
DOI: 10.1134/S0031030114100050