Latest Ordovician age of the Spinachitina fragilis Chitinozoan Biozone in Baltoscandia
文献类型：期刊论文
| 作者 | Nolvak, Jaak1; Liang, Yan2; Hints, Olle1 |
| 刊名 | ESTONIAN JOURNAL OF EARTH SCIENCES
 |
| 出版日期 | 2023 |
| 卷号 | 72期号:1页码:82-85 |
| 关键词 | chitinozoans biostratigraphy Ordovician-Silurian boundary beds East Baltic |
| ISSN号 | 1736-4728 |
| DOI | 10.3176/earth.2023.5 |
| 通讯作者 | Nolvak, Jaak(jaak.nolvak@taltech.ee) |
| 英文摘要 | The global Spinachitina fragilis Chitinozoan Biozone has been considered the lower most Silurian zone in most publications. S. fragilis was first described from the Ohesaare drill core, Estonia, and utilised as a Baltic regional zonal taxon together with Ancyrochitina laevaensis. Despite its wide geographical occurrence, S. fragilis has remained poorly documented in its type region. This has created confusion in taxonomy and distribution of the species. Herein, we have restudied material from the type locality and supplementary sections in the East Baltic region. S. fragilis generally has a very short stratigraphic range, which, according to new data on carbon isotope chemostratigraphy, coincides with the falling limb of the Hirnantian carbon isotope excursion. This suggests the latest Hirnantian rather than the early Rhuddanian age of the Spinachitina fragilis Chitinozoan Biozone in Baltoscandia. Based on this view, we revise the latest Ordovician chitinozoan biozonal scheme for the region. Globally, the S. fragilis Biozone may span across the Ordovician-Silurian boundary. |
| WOS关键词 | EARLY SILURIAN CHITINOZOANS ; BIOSTRATIGRAPHY ; ACRITARCHS |
| 资助项目 | Estonian Research Council[PRG1701] |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:001015399200006 |
| 出版者 | ESTONIAN ACAD PUBLISHERS |
| 资助机构 | Estonian Research Council |
| 源URL | [http://ir.nigpas.ac.cn/handle/332004/42479]  |
| 专题 | 中国科学院南京地质古生物研究所 |
| 通讯作者 | Nolvak, Jaak |
| 作者单位 | 1.Tallinn Univ Technol, Dept Geol, Ehitajate 5, EE-19086 Tallinn, Estonia 2.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, 39 East Beijing Rd, Nanjing 210008, Peoples R China |
| 推荐引用方式 GB/T 7714 | Nolvak, Jaak,Liang, Yan,Hints, Olle. Latest Ordovician age of the Spinachitina fragilis Chitinozoan Biozone in Baltoscandia[J]. ESTONIAN JOURNAL OF EARTH SCIENCES,2023,72(1):82-85. |
| APA | Nolvak, Jaak,Liang, Yan,&Hints, Olle.(2023).Latest Ordovician age of the Spinachitina fragilis Chitinozoan Biozone in Baltoscandia.ESTONIAN JOURNAL OF EARTH SCIENCES,72(1),82-85. |
| MLA | Nolvak, Jaak,et al."Latest Ordovician age of the Spinachitina fragilis Chitinozoan Biozone in Baltoscandia".ESTONIAN JOURNAL OF EARTH SCIENCES 72.1(2023):82-85. |
入库方式： OAI收割
来源：南京地质古生物研究所
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