Early occurrence of a Pennsylvanian-age medullosalean frond similar to Alethopteris pseudograndinioides in the intra-montane basin of Bohemia Zbyněk Šimůnek , Christopher J. Cleal 2018 | volume 74 | issue 1-2 | pages 37–44 PDF
New classification of the genus Cordaites from the Carboniferous and Permian of the Bohemian Massif, based on cuticle micromorphology Zbyněk Šimůnek 2006 | volume 62 | issue 3-4 | pages 97–210 PDF
