NIGPAS OpenIR
Shell microstructures of the helcionelloid mollusc Anabarella australis from the lower Cambrian (Series 2) Xinji Formation of North China
Li, Luoyang1,2; Zhang, Xingliang1; Skovsted, Christian B.1,2; Yun, Hao1; Li, Guoxiang3; Pan, Bing2,3
2019-10-18
Source PublicationJOURNAL OF SYSTEMATIC PALAEONTOLOGY
ISSN1477-2019
Volume17Issue:20Pages:1699-1709
Abstract

Although various types of shell microstructures are documented from Cambrian molluscs, the precise organization and mineralogical composition of Terreneuvian molluscs are relatively unknown. Anabarella was one of the first helcionellid molluscs to appear in the Terreneuvian, with the genus surviving until the third epoch of the Cambrian. Here, shell microstructures of Anabarella australis have been studied based on new collections from the lower Cambrian (Series 2) Xinji Formation of the North China Block. Results show that A. australis has a laminar inner shell layer that consists of crossed foliated lamellar microstructure (CFL). Nacreous, crossed-lamellar and foliated aragonite microstructures previously documented in the older (Terreneuvian) species A. plana are here revised as preservational artefacts of the CFL layers. This complex skeletal organization of Anabarella suggests that mechanisms of molluscan biomineralization evolved very rapidly. Morphologically, specimens from the Chaijiawa section show a pattern of distinct 'pseudo-dimorphism' as external coatings are identical to Anabarella, while associated internal moulds are similar to the helcionelloid genus Planutenia. In contrast, internal moulds from the Shangzhangwan section show considerable morphological variation owing to preservational bias and show greater similarities to specimens from South Australia, Northeast Greenland and Germany. These observations demonstrate that the extensive morphological variation seen in the internal moulds of the cosmopolitan genus Anabarella are primarily preservational artefacts and are unlikely to represent the real intra- and interspecific variability of the animal. In these cases, Planutenia is here confirmed to be a subjective synonym of Anabarella.

KeywordCambrian Helcionelloida shell microstructure taxonomy
DOI10.1080/14772019.2018.1546236
Language英语
WOS KeywordFOSSILS ; MORPHOLOGY ; ORIGIN ; BRACHIOPODS ; BIVALVIA
Funding ProjectChina Scholarship Council (CSC)[201706970037] ; National Key Research and Development Program[2017YFC0603101] ; Natural Science Foundation of China[41621003] ; Natural Science Foundation of China[41890845] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB26000000] ; 111 Project[D17013] ; Swedish Research Council[VR2016-04610]
WOS Research AreaEvolutionary Biology ; Paleontology
WOS SubjectEvolutionary Biology ; Paleontology
WOS IDWOS:000486521700001
Funding OrganizationChina Scholarship Council (CSC) ; National Key Research and Development Program ; Natural Science Foundation of China ; Strategic Priority Research Program of Chinese Academy of Sciences ; 111 Project ; Swedish Research Council
PublisherTAYLOR & FRANCIS LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.nigpas.ac.cn/handle/332004/27880
Collection中国科学院南京地质古生物研究所
Corresponding AuthorZhang, Xingliang; Skovsted, Christian B.
Affiliation1.Northwest Univ, Dept Geol, Shaanxi Key Lab Early Life & Environm, State Key Lab Continental Dynam, Xian 710069, Shaanxi, Peoples R China
2.Swedish Museum Nat Hist, Dept Palaeobiol, Box 50007, SE-10405 Stockholm, Sweden
3.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Jiangsu, Peoples R China
Recommended Citation
GB/T 7714
Li, Luoyang,Zhang, Xingliang,Skovsted, Christian B.,et al. Shell microstructures of the helcionelloid mollusc Anabarella australis from the lower Cambrian (Series 2) Xinji Formation of North China[J]. JOURNAL OF SYSTEMATIC PALAEONTOLOGY,2019,17(20):1699-1709.
APA Li, Luoyang,Zhang, Xingliang,Skovsted, Christian B.,Yun, Hao,Li, Guoxiang,&Pan, Bing.(2019).Shell microstructures of the helcionelloid mollusc Anabarella australis from the lower Cambrian (Series 2) Xinji Formation of North China.JOURNAL OF SYSTEMATIC PALAEONTOLOGY,17(20),1699-1709.
MLA Li, Luoyang,et al."Shell microstructures of the helcionelloid mollusc Anabarella australis from the lower Cambrian (Series 2) Xinji Formation of North China".JOURNAL OF SYSTEMATIC PALAEONTOLOGY 17.20(2019):1699-1709.
Files in This Item:
File Name/Size DocType Version Access License
Shell microstructure(3528KB)期刊论文出版稿开放获取CC BY-NC-SA
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Li, Luoyang]'s Articles
[Zhang, Xingliang]'s Articles
[Skovsted, Christian B.]'s Articles
Baidu academic
Similar articles in Baidu academic
[Li, Luoyang]'s Articles
[Zhang, Xingliang]'s Articles
[Skovsted, Christian B.]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Li, Luoyang]'s Articles
[Zhang, Xingliang]'s Articles
[Skovsted, Christian B.]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.