1. A coenopterid fructification from the Upper Freeport, No. 7, coal in southeastern Ohio;Abbott;Journal of Paleontology,1961
2. Fossil in situ spores and pollen grains: An annotated catalogue;Balme;Review of Palaeobotany and Palynology,1995
3. Die Rotliegendflora Sachsens;Barthel;Abhandlungen des Staatlichen Museums für Mineralogie und Geologie zu Dresden,1976
4. Bek, J., 1998. Spore populations of some plants of groups Lycophyta, Sphenophyta, Pteridophyta and Progymnospermophyta from Carboniferous limnic basins of the Czech Republic (in Czech with English summary). Thesis, Geological Institute of the Academy of Sciences of the Czech Republic, Prague (unpublished).
5. Some lycopsid, sphenopsid and pteropsid fructifications and their miospores from the Upper Carboniferous basins of the Bohemian Massif;Bek;Palaeontographica B,1998