为什么Lycospora在许多宾夕法尼亚孢子组合中占优势

Q3 Earth and Planetary Sciences

Fossil Imprint Pub Date : 2021-01-01 DOI:10.37520/fi.2021.002

B. Thomas

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引用次数: 0

摘要

广义上的小孢子属Lycospora是由异孢子球果(Flemingites)和同孢子球果(Lepidostrobus)产生的。计算由球果产生的小孢子的数量，然后由单个宾夕法尼亚树状石松产生的小孢子的数量。根根根的分布，可以推断为一平方公里的森林。在这样的森林中产生的孢子数量的计算是巨大的，这就解释了为什么一些分散的孢子区系是由这些孢子主导的。煤中有分散的孢子组合，煤中含有高比例的石孢菌。然而，孢子的制备和计数方法并没有提供足够的信息来对样品中的孢子总数进行有意义的计算。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Why Lycospora dominated many Pennsylvanian spore assemblages

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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来源期刊

Fossil Imprint Earth and Planetary Sciences-Stratigraphy

CiteScore

1.70

自引率

0.00%

发文量

期刊介绍： Fossil Imprint (formerly Acta Musei Nationalis Pragae, Series B – Historia Naturalis) is an international, open access journal, publishing original papers and reviews of any length from all areas of paleontology and related disciplines, such as palaeoanthropology, biostratigraphy, palynology, and archaeobotany/zoology. All taxonomic groups are treated, including plants, invertebrates, vertebrates, microfossils, and ichnofossils, with a special emphasis on terrestrial and post-Palaeozoic marine biota. We encourage the publication of international meetings as well as special thematic issues. The aim of the journal is to spread the scientific knowledge with no restrictions, and to allow access to it to any interested person. Each article includes information about the date of receiving, accepting and issue.