Author: Sanz-López, J. (et al.), 2007.:
Title: Serpukhovian conodonts from Northern Spain and their biostratigraphic application.
Description: Palaeontology, 50(4): pp. 883-904, 2 pls. of microphotos, 6 figs., refs. Plain new wrs. - Upper Mississippian (uppermost Lower Carboniferous)/

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