Trilobite assemblage of Calceola-bearing beds in Acanthopyge Limestone (Choteč formation, Middle Devonian, Eifelian, Prague Basin, the Czech Republic)

Q3 Earth and Planetary Sciences

Fossil Imprint Pub Date : 2019-08-01 DOI:10.2478/if-2019-0007

P. Budil, M. Mergl

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引用次数: 2

Abstract

Abstract The trilobite assemblage of Calceola-bearing beds in the upper part of Acanthopyge Limestone (Choteč Formation, Eifelian) in the Koněprusy area, the Czech Republic, is described. Together with occurrence of Calceola, it indicates absence of significant palaeogeographic barriers restricting the distribution of the Rhenish-Type faunas in the Middle Devonian. The generic composition of the gathered trilobite assemblage somewhat differs from typical Acanthopyge-Phaetonellus assemblage characteristic for the Acanthopyge Limestone facies in possible absence and/or very rare occurrence of Phaetonellus, and only infrequent occurrence of Acanthopyge. Phacopid Chotecops cf. hoseri (Hawle et Corda, 1847) distinctly dominates; all other taxa are rather rare. Important is an occurrence of scutelluids of the Scutellum sensu lato group (preservation of remains does not enable more precise determination) and Longiproetus(?). Trilobite remnants are generally poorly preserved and very fragmented (only minute shields are not affected), which support a high-dynamic, shallow-water original environment.

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捷克布拉格盆地Eifelian中泥盆世choteje组棘源灰岩含calceola层三叶虫组合

摘要描述了捷克konkonuprusy地区棘岩灰岩(Eifelian choteje组)上部含calceola层的三叶虫组合。与Calceola的出现一起，表明中泥盆世莱茵型动物群的分布没有明显的古地理障碍。收集到的三叶虫组合的一般组成与棘棘岩灰岩相典型的棘棘岩-Phaetonellus组合特征有所不同，可能没有或很少出现Phaetonellus，而棘棘岩很少出现。Phacopid Chotecops cf. hoseri (Hawle et Corda, 1847)明显占优势;所有其他分类群都相当罕见。重要的是出现了Scutellum sensu lato组的scutelluids(保存遗骸无法进行更精确的测定)和Longiproetus(?)。三叶虫的残骸通常保存得很差，而且非常破碎(只有微小的护盾不受影响)，这支持了高动态的浅水原始环境。

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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.