Lower Famennian conodont-based stratigraphy of the Pripyat Trough

Three conodont assemblages characterizing the standard triangularis, crepida, and rhomboidea zones can be defined in lower Famennian sections of the Pripyat Trough. The defined local conodont units include the Icriodus iowaensis, Palmatolepis wolskae-Palmatolepis circularis, Palmatolepis klapperi-Polygnathus semicostatus, Icriodus divergentus, and Palmatolepis subperlobata helmsi beds. The defined conodont assemblages are correlated with their coeval standard counterparts of the East European Platform. New conodont species and subspecies are described: Palmatolepis klapperi biparapetus, Polygnathus barskovi, Po. chegodaevi, Po. semeni, Po. inaequilateralis, Polynodosus nodocostatus productus, Icriodus divergentus, I. pushkini.