Fossilium Gatalogus 
II: Plantae. 
Editus a 
W. Jongmans. 
Pars 5: 
W. Jongmans, 
Equisetales IY: 
Calamites. 
Labor&tory of Paleobotany MAR 1 
W. Junk 
Berlin W. 15. 
