Ferns from the Upper Silesian Basin and their in situ spores

Geoscience Research Reports 42, 2009 (GRR for 2008), pages 105–108

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Abstract

The report deals with true fern fossils from the Upper Silesian Basin from the Czech and the Polish part of the basin. The stratigraphical distribution of thirty species is from the Pendleian (Namurian A) to Cantabrian. A list of species from the basin, their stratigraphical position and classification into fern groups (Filicales, Marattiales and zygopterid forms) is published for the first time. Specific variability of fern groups shows two prominent boundaries, the first between Namurian A and B and the second between Bolsovian and Asturian. We recognised new species such as Waldenburgia corynepteroides and Sonapteris sp. that have not been mentioned from the Upper Silesian Basin before.