Acta Palaeontologica Polonica

Two new Carboniferous fertile sphenophylls and their spores from the Czech Republic

Milan Libertín, Jiří Bek, and Jana Drábková

Acta Palaeontologica Polonica 53 (4), 2008: 723-732 doi:10.4202/app.2008.0414

Two new species of sphenophyllalean strobili with in situ spores are proposed from the Radnice Basin of the western and central Bohemian Carboniferous continental basins of the Czech Republic. Bowmanites brasensis sp. nov. from Břasy (Matylda Mine) and B. pseudoaquensis sp. nov. from Ovčín locality are determined mainly on the basis of their spores, which are about 100 μm in diameter. The thick−walled exine of the miospores is laevigate or sometimes very finely scabrate on the proximal contact area. Spores resemble the dispersed species Punctatisporites obesus. Cones of B. brasensis and B. pseudoaquensis are organically connected with stems having prominent blade leaves and represent a new group of sphenophyllalean strobili.

Key words: Sphenophyllales, Bowmanites, Punctatisporites, spores, Pennsylvanian, Carboniferous, Czech Republic

Milan Libertín [], National Museum, Václavské náměstí 64, 11821 Prague 1, Czech Republic Jiří Bek [], Laboratory of Palaeobiology and Palaeoecology, Institute of Geology v.v.i., Academy of Sciences, Rozvojová 269, 165 00 Prague 6, Czech Republic Jana Drábková [], Czech Geological Survey, Klárov 3, 118 21 Prague 1, Czech Republic.