The sub-arborescent lycopsid genus Polysporia Newberry and its spores from the Pennsylvanian (Bolsovian–Stephanian B) continental basins of the Czech Republic

Autor: Bek, Jiří, Drábková, Jana, Dašková, Jiřina, Libertín, Milan
Zdroj: In Review of Palaeobotany and Palynology 2008 152(3):176-199
Databáze: ScienceDirect