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Palynological characteristics of the lower part of the Carboniferous of the Central Region of the Russian Platform.
The palynology of boreholes through the lower part of the Carboniferous and the latest Devonian in the central part of the Russian Platform has been studied. The late Devonian Khovansky Series contains spores of the Retispora lepidophyta - tenera (Ltn) Subzone of the Retispora lepidophyta (L) Zone. The Coupavninsky suite, which is locally developed and rests disconformably on the Khovansky Series, contains spores of the Vallatisporites pusillites - Bascaudaspora mischkinensis (PMi) Subzone of the Vallatisporites pusillites (P) Zone. Retispora lepidophyta is not found at this horizon. The overlying Malevsky suite contains spores of the Tumulispora malevkensis (M) Zone. The succeeding Upinsky suite contains spores of the Grandispora upensis (U) Zone. There is no representation in the central region of the Russian Platform of the PM and PLE Subzones of the P Zone which occur elsewhere below the M Zone. They are cut out at the boundary between the Khovansky Series and the Coupavninsky suite. The PMi Subzone and the M Zone are correlated with the VI Zone of Western Europe. A new species, Stenozonotriletes auriculatus Umnova sp. nov., is described.