华北鄂尔多斯盆地西北部乌拉来克地层下部的达里维利上统放射虫

IF 1.7 3区地球科学 Q2 PALEONTOLOGY Palaeoworld Pub Date : 2023-12-23 DOI:10.1016/j.palwor.2023.12.005

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引用次数: 0

摘要

描述了华北鄂尔多斯盆地西北部乌拉来克地层砾质灰岩中保存完好的放射虫组合。共描述了 7 个属 9 个种，包括 Inanigutta gansuensis、I. quadrispinosa、I. complanata、Inanibigutta pinglianensis、Oriundogutta bella、Triplococcus acanthicus、Haplentactinia juncta、Syntagentactinia pupila n. sp.和 Kalimnasphaera maculosa。利用三维 X 射线微型计算机断层扫描技术对新物种进行了详细检查。这是对乌拉来克地层放射虫化石的首次记录，有助于更好地了解奥陶纪放射虫动物群的特征，促进鄂尔多斯盆地的地层关联与划分。

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Uppermost Darriwilian radiolarians from the lower part of Wulalike Formation, Northwest Ordos Basin, North China

A well-preserved radiolarian assemblage is described from argillaceous limestone of the Wulalike Formation in the Northwest Ordos Basin, North China. A total of nine species of seven genera are described, including Inanigutta gansuensis, I. quadrispinosa, I. complanata, Inanibigutta pinglianensis, Oriundogutta bella, Triplococcus acanthicus, Haplentactinia juncta, Syntagentactinia pupila n. sp., and Kalimnasphaera maculosa. Three-dimensional X-ray micro-computed tomography is used to make a detailed examination of the new species. This is the first documentation of radiolarian fossils from the Wulalike Formation, which contributes to better understanding of the features of Ordovician radiolarian faunas and facilitate stratigraphic correlation and subdivision in the Ordos Basin.

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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