Microspinosporites, a new genus of Palaeozoic pseudosaccate miospores of flemingitalean affinity

Bek, Jiřı́

doi:10.3140/bull.geosci.1365

Cited by 4 publications

(5 citation statements)

References 8 publications

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“…In situ megaspores have been identified as Lagenoisporites rugosus type and in situ microspores as of Microspinosporites orbiculus type. These identifi cations are entirely consistent with in situ megaspores and microspores reported in strobili of Flemingites (Bek, 2013(Bek, , 2017. The morphological characteristics of the strobili conform to Flemingites russelianus (Binney) Brack-Hanes & Thomas, as presented below.…”

Section: Methodssupporting

confidence: 84%

“…Megaspores are classifi ed based on Dybová-Jachowicz et al (1979, 1982, 1987a, 1987b. Microspores are classifi ed according to the system of dispersed spores suggested by Potonié & Kremp (1954, 1955, Smith & Butterworth (1967) and Bek (2013). In situ spores were compared directly with the original diagnoses, type specimens, description, and illustrations of dispersed spore species.…”

Section: Repository Spanish Materials Is Stored In the Fossilmentioning

confidence: 99%

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Revision and significance of the Westphalian (Middle Pennsylvanian) arborescent lycopsid Bergeria dilatata (Lindley & Hutton) Álvarez-Vázquez & Wagner

Álvarez-Vázquez

Bek

Wagner

2018

Spanish J. Palaeontol.

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Bergeria dilatata (Lindley & Hutton) Álvarez-Vázquez & Wagner, a Middle Pennsylvanian lycopsid, is redescribed based on type material from England as well as 586 specimens from the Peñarroya-Belmez-Espiel Coalfield, Córdoba province, southern Spain. The species is characterized by longer than broad, smooth leaf cushions showing false leaf scars, and the presence of perennial, long, entire, single-veined leaves. A complete synonymy is presented and 21new species (two of them with doubts), previously placed in 6 diff erent genera, have been synonymized. Associated Flemingites-type cones, determined as Flemingites russelianus, yielded in situ spores of the Lagenoisporites rugosus type and microspores of the Microspinosporites type.

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Section: Methodssupporting

confidence: 84%

Section: Repository Spanish Materials Is Stored In the Fossilmentioning

confidence: 99%

Revision and significance of the Westphalian (Middle Pennsylvanian) arborescent lycopsid Bergeria dilatata (Lindley & Hutton) Álvarez-Vázquez & Wagner

Álvarez-Vázquez

Bek

Wagner

2018

Spanish J. Palaeontol.

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“…Published accounts of in situ spores recovered from fructifications and the knowledge of the affinities of these fructifications (e.g. Thomas, 1970;Thomas et al, 2009;Drábková et al, 2004;Bek and Opluštil, 2006;Bek et al, 2008;Bek et al, 2009 a,b;Opluštil and Bek, 2009;Bek, 2012Bek, , 2013Thomas and Bek, 2014) permit us to make palaeoecological interpretations from the microspore assemblages. The fructifications known to have spores comparable to the dispersed spore genera together with the parent plants of these fructifications are given in Table 1.…”

Section: Accepted Manuscriptmentioning

confidence: 99%

Ecological changes in Pennsylvanian (Asturian and early Cantabrian) coal floras inferred from lycophyte microspore abundances

Thomas

Dimitrova

2017

Earth-Science Reviews

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The distribution and relative amounts of six genera of lycophyte microspores, Lycospora, Densosporites, Crassispora, Cirratriradites, Endosporites and Cadiospora, are compared in the Pennsylvanian coals from the Dobrudzha and Forest of Dean coalfields, clastic sediments from the Glace Bay borehole in the Cape Breton Coalfield, and the southern crop of the South Wales coalfield. Inverse relationships are shown between Lycospora and Densosporites and between Lycospora and Crassispora in samples from all of the coalfields. The changes in microspore assemblages suggest there were at least five different communities of lycophyte plants growing in the Pennsylvanian swamps. Changes in microspore assemblages at the Asturian/Cantabrian boundary mirror the previously described macrofloral changes at this time.

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“…They are 20-30 μm in diameter, and the spore wall is 0.3-0.8 μm thick with an average of 0.6 μm. The spores are trilete and when found as sporae dispersae are most similar to the miospore genus Microspinosporites (Bek, 2013).…”

Section: Flemingites Schopfiimentioning

confidence: 99%

Reexamination of cell contents in Pennsylvanian spores and pollen grains using Raman spectroscopy

Glauser

Harper

Taylor

et al. 2014

Review of Palaeobotany and Palynology

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Permineralization offers exceptional structural preservation to the level of cellular components, many of which are found within fossilized plant specimens. In some cases, structures within plant cells, particularly those found within spores and pollen grains, have been interpreted as nuclei. Although these structures have been studied morphologically and ultrastructurally, little is known about their composition and origin. This study uses petrographic thin sections and ultraviolet (UV) Raman spectroscopy to reexamine cellular inclusions within three types of Pennsylvanian spores and pollen grains with the intent to interpret the molecular composition and therefore, the identity of these structures. Thin sections are examined using Raman spectroscopy, which indicates the presence of disordered carbonaceous material and calcite. There is no significant difference in the chemical composition between the intracellular inclusions and surrounding areas within each specimen. This study represents one of the first applications of Raman spectroscopy in which the internal cell contents of fossil plant taxa are analyzed. Results do not support the presence of nuclei, although further examination is recommended to elucidate the origin and identity of the intracellular inclusions.

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Microspinosporites, a new genus of Palaeozoic pseudosaccate miospores of flemingitalean affinity

Cited by 4 publications

References 8 publications

Revision and significance of the Westphalian (Middle Pennsylvanian) arborescent lycopsid Bergeria dilatata (Lindley & Hutton) Álvarez-Vázquez & Wagner

Revision and significance of the Westphalian (Middle Pennsylvanian) arborescent lycopsid Bergeria dilatata (Lindley & Hutton) Álvarez-Vázquez & Wagner

Ecological changes in Pennsylvanian (Asturian and early Cantabrian) coal floras inferred from lycophyte microspore abundances

Reexamination of cell contents in Pennsylvanian spores and pollen grains using Raman spectroscopy

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