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

Bek, Jiřı́; Drábková, Jana; Dašková, Jiřina; Libertı́n, Milan

doi:10.1016/j.revpalbo.2008.05.002

Cited by 20 publications

(10 citation statements)

References 14 publications

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“…lycopsids either not reported (e.g. Omphalophloios and Selaginella types) or very rare (Polysporia Newberry) in the macrofloral record (Bek et al 2008, Opluštil et al 2017. This interval also hosts the highest diversity of miospores of unknown affinity (electronic supplement 1; Figs 4, 5).…”

Section: Temporal Changes In Miospores Pollen Grains and Plants During Pennsylvanian And Early Permianmentioning

confidence: 99%

Early Pennsylvanian to early Permian (Bashkirian-Asselian) miospore and pollen assemblages of the Czech part of the Intra-Sudetic Basin

Bek¹,

Opluštil²

2021

Bull. Geosci.

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Unpublished data resulting from extensive palynological investigation of coal and carbonaceous rocks from more than thirty boreholes, drilled in the Czech sector of the Intra-Sudetic Basin in the second half of the 20 th century, were taxonomically upgraded and analysed for stratigraphic and systematic evaluation. In total 78 genera and 322 miospore and pollen species have been recorded within a radioisotopically constrained ~21 Ma long interval from middle Bashkirian to early Asselian times, i.e. between 318 and 297 Ma. The miospore and pollen assemblages of coal seams are characteristic by the occurrence of stratigraphically important genera (e.g. Waltzispora, Radiizonates, Tripartites, Kosankeisporites, Gillespieisporites, Cadiospora, Angulisporites, Latensina, Lueckisporites, Spinosporites) and taxa recorded only within each member with the combination of quantitative data. Five new palynozones of the basin are recognised. All miospore and pollen taxa are divided into categories based on their plant affinity for the comparison of palynological and macrofloral records in terms of the diversity and vegetation patterns based on the combination of unpublished palynological and freshly published plant fossil records. • Key words: palynology, spores and pollen, Intra-Sudetic Basin, Pennsylvanian.Bek, J. & Opluštil, S. 2021. Early Pennsylvanian to early Permian (Bashkirian-Asselian) miospore and pollen assemblages of the Czech part of the Intra-Sudetic Basin. Bulletin of Geosciences 96(3), 341-379 (15 figures, 3 tables, appendix, electronic supplement). Czech Geological Survey, Prague.

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Section: Temporal Changes In Miospores Pollen Grains and Plants During Pennsylvanian And Early Permianmentioning

confidence: 99%

Early Pennsylvanian to early Permian (Bashkirian-Asselian) miospore and pollen assemblages of the Czech part of the Intra-Sudetic Basin

Bek¹,

Opluštil²

2021

Bull. Geosci.

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“…Kalibová (1960) also found abundant spores attributable to the marattialean ferns. In addition, one lycopsid, Polysporia sp., which is regarded as a peat-forming element (Bek et al 2008) (Kalibová, 1959) that are all believed to have been produced by Polysporia Newberry (Bek et al 2008). Since only a single macrofossil of Polysporia sp.…”

Section: B C D E F Amentioning

confidence: 99%

First record of the noncalcareous macroalga Perissothallus from shallow-water deposits (Pennsylvanian) in the Kladno-Rakovník Basin, Czech Republic

Pšenička¹,

Krings²

2016

Bull. Geosci.

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The fossil genus Perissothallus is used for adpression fossils of late Palaeozoic noncalcareous freshwater algae consisting of erect, cylindrical branches that radiate from a central holdfast and dichotomize repeatedly. The taxon currently includes P. versiformis from the Upper Pennsylvanian of North America and P. densus from the Lower Permian of Germany. In this paper we describe a third species, Perissothallus dekovensis nov. sp., from the Gzhelian (Stephanian B; Upper Pennsylvanian) of the Kladno-Rakovník Basin, Czech Republic. The new species differs from the previously described forms with regard to thallus size and branching pattern of the erect parts. Sedimentological data and the fossils that co-occur with the algal thalli suggest that P. dekovensis lived in shallow-water areas of a lake or abandoned channel that was surrounded by tree ferns, cordaites (especially Poacordaites-type), and lycopsids.•

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“…Descriptions of in situ spores recovered from the fructifications of arborescent lycophytes have been published many times (e.g., Thomas 1970, Thomas and Dytko 1980, Thomas et al 2009, Drábková et al 2004, Bek and Opluštil 2006, Bek et al 2008, 2009a, b, Opluštil and Bek 2009, Bek 2012, 2013, 2017, Thomas and Bek 2014 The major problem is that there has been no distinction between Lycospora and Microspinosporites in the literature so for the purposes of this paper all comments and calculation refer to Lycospora. Schopf et al (1944), Potonié and Kremp (1954) and Somers et al (1972) mentioned a great number of Lycospora species including holotypes.…”

Section: Introductionmentioning

confidence: 99%

Why Lycospora dominated many Pennsylvanian spore assemblages

Thomas¹

2021

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The microspore genus Lycospora in its wider sense is produced by both heterosporous cones, Flemingites, and homosporous cones Lepidostrobus. Calculations are made of the number of microspores that are produced by cones and then by individual Pennsylvannian arborescent lycophytes. The distribution of the rooting rhizohores, Stigmaria can be extrapolated to a square kilometre of forest. A calculation of the number of spores produced in such a forest is enormous which explains why some dispersed spore floras are dominated by these spores. There are dispersed spore assemblages prepared from coal with high percentages of Lycospora. However, the methods of preparation and counting of the spores do not give enough information to make a meaningful calculation of their total numbers in the samples.

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

Cited by 20 publications

References 14 publications

Early Pennsylvanian to early Permian (Bashkirian-Asselian) miospore and pollen assemblages of the Czech part of the Intra-Sudetic Basin

Early Pennsylvanian to early Permian (Bashkirian-Asselian) miospore and pollen assemblages of the Czech part of the Intra-Sudetic Basin

First record of the noncalcareous macroalga Perissothallus from shallow-water deposits (Pennsylvanian) in the Kladno-Rakovník Basin, Czech Republic

Why Lycospora dominated many Pennsylvanian spore assemblages

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