阿根廷前山地带（Cuyania terrane）的第一批Dapingian舌状微腕足动物：分类和动物关系

IF 1.7 3区地球科学 Q2 PALEONTOLOGY

Palaeoworld Pub Date : 2024-03-18 DOI:10.1016/j.palwor.2024.03.002

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引用次数: 0

摘要

本文描述并说明了阿根廷中奥陶纪瓜尔卡马约地层底部的鳞状腕足类新记录。取样层位于阿根廷圣胡安前缘山脉 Potrerillos 溪地段的前 3 米处，属于中奥陶纪（中达平纪）下段。该动物群包括矛形目（Lingulids）、汉森（Hansen）、霍尔默（Holmer）和sp.，以及针形目（acrotretids）的拉维（Lavié）、塞拉（Serra）和费尔特斯（Feltes）、波波夫（Popov）、sp.、sp.和 sp.。这个相对多样化的群落是库亚尼亚地层中第一个达平夏时代的混合动物群落，显示出与波罗的海、波希米亚、阿瓦鲁尼亚、华南和劳伦西亚地区的亲缘关系。

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First Dapingian linguliform microbrachiopods from the Argentine Precordillera (Cuyania terrane): Taxonomy and faunal relationships

New records of linguliform brachiopods from the Middle Ordovician of Argentina, coming from the base of the Gualcamayo Formation, are described and illustrated. The sampled levels correspond to the first 3 m at the Potrerillos Creek section, Argentine Precordillera of San Juan, assigned to the lower part of the Baltoniodus navis Zone (middle Dapingian). The fauna consists of the lingulids Palaeoglossa? sp., Elliptoglossa vulgaris Hansen and Holmer and Paterula sp., together with the acrotretids Conotreta andina Lavié, Serra and Feltes, Scaphelasma zharykensis Popov, Torynelasma? sp., Numericoma simplex?, and Eoconulus sp. This relatively diverse association is the first of Dapingian age in the Cuyania terrane with a mixed fauna, which shows affinities with the regions of Baltica, Bohemia, Avalonia, South China, and Laurentia.

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来源期刊

Palaeoworld PALEONTOLOGY-

CiteScore

4.00

自引率

5.90%

发文量

期刊介绍： Palaeoworld is a peer-reviewed quarterly journal dedicated to the study of past life and its environment. We encourage submission of original manuscripts on all aspects of palaeontology and stratigraphy, comparisons of regional and global data in time and space, and results generated by interdisciplinary investigations in related fields. Some issues will be devoted entirely to a special theme whereas others will be composed of contributed articles. Palaeoworld is dedicated to serving a broad spectrum of geoscientists and palaeobiologists as well as serving as a resource for students in fields as diverse as palaeobiology, evolutionary biology, taxonomy and phylogeny, geobiology, historical geology, and palaeoenvironment. Palaeoworld publishes original articles in the following areas: •Phylogeny and taxonomic studies of all fossil groups •Biostratigraphy, chemostratigraphy, chronostratigraphy •Palaeoecology, palaeoenvironment and global changes throughout Earth history •Tempo and mode of biological evolution •Biological events in Earth history (e.g., extinctions, radiations) •Ecosystem evolution •Geobiology and molecular palaeobiology •Palaeontological and stratigraphic methods •Interdisciplinary studies focusing on fossils and strata