Palynological grouping of Paleozoic marattialean miospores

• Published in: Review of palaeobotany and palynology Vol. 284; p. 104341
• Main Author: Bek, Jiří
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01-01-2021
• ISSN: 0034-6667; 1879-0615
• DOI: 10.1016/j.revpalbo.2020.104341

The paper provides in situ records of eight species of spore genera Punctatosporites, Laevigatosporites, Latosporites, Torispora, Cyclogranisporites and Thymospora macerated from fertile plant specimens of genera Asterotheca (A. sp. A and B), Cyathocarpus (C. arborea, C. aff. arborea and Cyathocarpus hemiteloides) and Acitheca (A. ambigua) which come from the Bolsovian to Stephanian B of the Kladno-Rakovník and Pilsen basins, Czech Republic and Scolecopteris hemiteloides from the Permian (Roetligendes), Döhlener Becken, Germany. It is possible to recognize seven morphological types of in situ spores isolated from Paleozoic marattialean ferns. Most of them produced monolete others trilete spores. Sometimes sporangia contain only one morphological type of the spores, sometimes in situ spores are comparable with more dispersed species of two or even four genera. Palynological grouping of Paleozoic marattialeans is based on in situ spores isolated from 124 parent plant species.
•In situ spores of six taxa of Paleozoic marattialeans from the Czechia and Germany.•New grouping of Paleozoic marattialeans based on their in situ spores.•Review of 119 records of in situ spores of Paleozoic marattialeans.