C. A Sandberg, M Streel, and R. A Scott (1972)
Comparison between conodont zonation and spore assemblages at the Devonian-Carboniferous boundary in the western and central United tates and in Europe
Congrès International de Stratigraphie et de Géologie du Carbonifère (International Congress on Carboniferous and Permian Stratigraphy), vol. 7 (Krefeld) p. 179-203.
18107, 128, 146, Ht, Lg, SYNAM, SYNDIN, FA, TN, DEV, CARB, PALYNO, PALMIC, STRATBIO
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