Floian, Early Ordovician, trilobites from the Olongbluk Terrane, northwest China
Floian, Early Ordovician trilobites are systematically described and revised based on new material from the middle part of the Duoquanshan Formation of the Shihuigou area, northern Qinghai Province, northwest China. The fauna that lived on the shallow-water carbonate platform comprises three speci...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Institute of Paleobiology PAS
2023-12-01
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| Series: | Acta Palaeontologica Polonica |
| Subjects: | |
| Online Access: | https://www.app.pan.pl/archive/published/app68/app011022023.pdf |
| _version_ | 1827373009677058048 |
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| author | XIN WEI ZHIQIANG ZHOU |
| author_facet | XIN WEI ZHIQIANG ZHOU |
| author_sort | XIN WEI |
| collection | DOAJ |
| description | Floian, Early Ordovician trilobites are systematically described and revised based on new material from the middle part
of the Duoquanshan Formation of the Shihuigou area, northern Qinghai Province, northwest China. The fauna that lived
on the shallow-water carbonate platform comprises three species belonging to two families, i.e., Tsaidamaspis diarmatus,
Zhiyia tsinghaiensis, and Liexiaspis sp. indeterminate. It exhibits a strong endemicity to the Olongbluk terrane. The new
isoteline genus Zhiyia is established on the basis of the material from the Olongbluk terrane and South China palaeoplate,
and is characterized by its: (i) almost obsolete cephalic and pygidial axial furrows; (ii) flattened anterior border
and narrow (sag., exsag.) occipital ring; (iii) bilobed hypostome with a shallow median notch and a small triangular
median projection; (iv) subsemicircular pygidium with wide pygidial axis and border. Faunal evidence indicates that the
palaeogeographic position of the Olongbluk terrane may have been situated closer to the South China palaeoplate rather
than the North China palaeoplate during the Floian. |
| first_indexed | 2024-03-08T11:09:01Z |
| format | Article |
| id | doaj.art-02dcb7c213f9455b93cfe407d7b939e1 |
| institution | Directory Open Access Journal |
| issn | 0567-7920 1732-2421 |
| language | English |
| last_indexed | 2024-03-08T11:09:01Z |
| publishDate | 2023-12-01 |
| publisher | Institute of Paleobiology PAS |
| record_format | Article |
| series | Acta Palaeontologica Polonica |
| spelling | doaj.art-02dcb7c213f9455b93cfe407d7b939e12024-01-26T12:55:17ZengInstitute of Paleobiology PASActa Palaeontologica Polonica0567-79201732-24212023-12-0168468369310.4202/app.01102.2023Floian, Early Ordovician, trilobites from the Olongbluk Terrane, northwest ChinaXIN WEI0https://orcid.org/0000-0003-4095-280XZHIQIANG ZHOU1https://orcid.org/0000-0003-4897-3111State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Science, Nanjing 210008, China.Xi’an Institute of Geology and Mineral Resources, Chinese Academy of Geological Sciences, Xi’an 710054, China.Floian, Early Ordovician trilobites are systematically described and revised based on new material from the middle part of the Duoquanshan Formation of the Shihuigou area, northern Qinghai Province, northwest China. The fauna that lived on the shallow-water carbonate platform comprises three species belonging to two families, i.e., Tsaidamaspis diarmatus, Zhiyia tsinghaiensis, and Liexiaspis sp. indeterminate. It exhibits a strong endemicity to the Olongbluk terrane. The new isoteline genus Zhiyia is established on the basis of the material from the Olongbluk terrane and South China palaeoplate, and is characterized by its: (i) almost obsolete cephalic and pygidial axial furrows; (ii) flattened anterior border and narrow (sag., exsag.) occipital ring; (iii) bilobed hypostome with a shallow median notch and a small triangular median projection; (iv) subsemicircular pygidium with wide pygidial axis and border. Faunal evidence indicates that the palaeogeographic position of the Olongbluk terrane may have been situated closer to the South China palaeoplate rather than the North China palaeoplate during the Floian.https://www.app.pan.pl/archive/published/app68/app011022023.pdftrilobitapalaeogeographyfloianordovicianolongbluk terranenorthwest china |
| spellingShingle | XIN WEI ZHIQIANG ZHOU Floian, Early Ordovician, trilobites from the Olongbluk Terrane, northwest China Acta Palaeontologica Polonica trilobita palaeogeography floian ordovician olongbluk terrane northwest china |
| title | Floian, Early Ordovician, trilobites from the Olongbluk Terrane, northwest China |
| title_full | Floian, Early Ordovician, trilobites from the Olongbluk Terrane, northwest China |
| title_fullStr | Floian, Early Ordovician, trilobites from the Olongbluk Terrane, northwest China |
| title_full_unstemmed | Floian, Early Ordovician, trilobites from the Olongbluk Terrane, northwest China |
| title_short | Floian, Early Ordovician, trilobites from the Olongbluk Terrane, northwest China |
| title_sort | floian early ordovician trilobites from the olongbluk terrane northwest china |
| topic | trilobita palaeogeography floian ordovician olongbluk terrane northwest china |
| url | https://www.app.pan.pl/archive/published/app68/app011022023.pdf |
| work_keys_str_mv | AT xinwei floianearlyordoviciantrilobitesfromtheolongblukterranenorthwestchina AT zhiqiangzhou floianearlyordoviciantrilobitesfromtheolongblukterranenorthwestchina |