Chitinozoans with "skirt": Ultrastructure and palaeoecological implications of carina in Cyathochitina Eisenack, 1955
文献类型：期刊论文
| 作者 | Wang, Wenhui3; Liang, Yan2 ; Lyu, Qiao3; Hints, Olle1; Chen, Shefa3; Nolvak, Jaak1
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| 刊名 | PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
 |
| 出版日期 | 2021-05-15 |
| 卷号 | 570页码:16 |
| ISSN号 | 0031-0182 |
| 关键词 | Ordovician Microfossil Functional morphology Palaeogeography CFD analysis CHITDB |
| DOI | 10.1016/j.palaeo.2021.110348 |
| 通讯作者 | Wang, Wenhui(whwang@csu.edu.cn) |
| 英文摘要 | Carina, a sharp extension of the basal margin in some chitinozoans recalling a "skirt", is a primary character used for classifying chitinozoans at the genus level. However, little is known about this structure. In this study, we present new observations on the carina ultrastructure in the chitinozoan genus Cyathochitina that was investigated by using novel imaging techniques on three-dimensional specimens collected mainly from eastern Baltoscandia. The results show that the carina is loosely filled by sponge-like fibers with chemical compositions similar to those of the main vesicle layers. Cyathochitina is the dominant genus responsible for the taxonomic diversity of carina-bearing species, and it reached a diversity peak in the late Darriwilian. Palaeogeographically, the occurrences of Cyathochitina in the eastern Baltic region are reconstructed on the basis of data collected from 24 drillcores, suggesting links with sea-level fluctuations. The presence and morphology of the carina is interpreted as an adaptive life strategy with two benefits. First, the carina strengthened the basal firmness and reduced the weight of the chitinozoan vesicle by filling it with spongy fibrils. Second, computational fluid dynamics (CFD) analysis suggests that the formation of the carina might have improved the hydrodynamic properties and floating ability of the vesicle by dispersal in different hydrodynamic regimes. |
| 资助项目 | National Natural Science Foundation of China[41772001] ; National Natural Science Foundation of China[41972015] ; Strategic Priority Research Program of Chinese Academy of Sciences[196 (XDB26000000)] ; Estonian Research Council[PRG836] ; IGCP project[653] |
| WOS研究方向 | Physical Geography ; Geology ; Paleontology |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:000639124500007 |
| 资助机构 | National Natural Science Foundation of China ; Strategic Priority Research Program of Chinese Academy of Sciences ; Estonian Research Council ; IGCP project |
| 源URL | [http://ir.nigpas.ac.cn/handle/332004/38057]  |
| 专题 | 中国科学院南京地质古生物研究所 |
| 通讯作者 | Wang, Wenhui |
| 作者单位 | 1.Tallinn Univ Technol, Dept Geol, EE-19086 Tallinn, Estonia 2.Chinese Acad Sci, Ctr Excellence Life & Paleoenvironm, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Peoples R China 3.Cent South Univ, Sch Geosci & Infophys, Key Lab Metallogen Predict Nonferrous Met & Geol, Minist Educ, Changsha 410083, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Wenhui,Liang, Yan,Lyu, Qiao,et al. Chitinozoans with "skirt": Ultrastructure and palaeoecological implications of carina in Cyathochitina Eisenack, 1955[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2021,570:16. |
| APA | Wang, Wenhui,Liang, Yan,Lyu, Qiao,Hints, Olle,Chen, Shefa,&Nolvak, Jaak.(2021).Chitinozoans with "skirt": Ultrastructure and palaeoecological implications of carina in Cyathochitina Eisenack, 1955.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,570,16. |
| MLA | Wang, Wenhui,et al."Chitinozoans with "skirt": Ultrastructure and palaeoecological implications of carina in Cyathochitina Eisenack, 1955".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 570(2021):16. |
入库方式： OAI收割
来源：南京地质古生物研究所
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