Taxonomic revision of the Cambrian trilobite<i> Abadiella</i> and its stratigraphic significance in Gondwana

doi:10.1016/j.jseaes.2023.105855

	Taxonomic revision of the Cambrian trilobite Abadiella and its stratigraphic significance in Gondwana
	Wang, Mingkun 2; Peng, Shanchi 1; Zhang, Xingliang 1,2
刊名	JOURNAL OF ASIAN EARTH SCIENCES
	2023-11-01
卷号	257 页码:11
关键词	Abadiella South China Gondwana Stratigraphic correlation Cambrian Stage 3
ISSN号	1367-9120
DOI	10.1016/j.jseaes.2023.105855
通讯作者	Zhang, Xingliang(xzhang69@nwu.edu.cn)
英文摘要	The taxonomy of Abadiella Hupe ', 1953 and Parabadiella Zhang, 1966 from the lower Cambrian of Gondwana has long been a controversial issue. Based on newly-collected and formerly-reported specimens, 94 trilobite cranidia within 21 species were selected for morphometric analyses: principal components analysis (PCA) and canonical variates analysis (CVA). The integrated morphological characters were well accounted for by two principal components in PCA. The high CVA jackknife values further demonstrate a high degree of grouping, playing an important role in refining the ultimate taxonomic results. Specimens were distributed consistently within the morphospace (which is well constrained by the newly-collected specimens), demonstrating their close affinity and supporting their congeneric status. Additionally, three morphotypes were recognized from all selected specimens, which have been revised and incorporated into A. bourgini Hupe ', 1953, A. huoi Zhang, 1966, and A. yunnanensis Luo, 1981. Thus we consider A. huoi conspecific between South Australia and South China. Its cooccurrence allows us to correlate equivalent zones of Australia and South China (platform). In comparison with A. huoi, A. bourgini was reported from fewer localities in South China. Nevertheless, its presence in the Daguinaspis Zone of the Issendalenian Stage in Morocco permits a correlation with the A. huoi Zone of both China and Australia. Hence, the co-occurrences of A. bourgini in Morocco, South Australia and South China reinforces the correlation potential and resolution of the genus, making it possible to correlate the lower part of the Cambrian Stage 3 across Gondwana regions based on species-level trilobite biostratigraphy.
资助项目	National Natural Science Foundation of China[41890845] ; National Natural Science Foundation of China[41930319] ; Project 111[D17013] ; Natural Science Basic Research Plan of Shaanxi Province[2022JC-DW5-01]
WOS关键词	SOUTH-AUSTRALIA ; CHRONOSTRATIGRAPHY ; BIOSTRATIGRAPHY ; ASSEMBLAGES ; SERIES
WOS研究方向	Geology
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:001121118400001
资助机构	National Natural Science Foundation of China ; Project 111 ; Natural Science Basic Research Plan of Shaanxi Province
内容类型	期刊论文
源URL	[http://ir.nigpas.ac.cn/handle/332004/42779]
专题	中国科学院南京地质古生物研究所
通讯作者	Zhang, Xingliang
作者单位	1.Chinese Acad Sci, Nanjing Inst Geol & Paleontol, Nanjing 210008, Peoples R China 2.Northwest Univ, Dept Geol, State Key Lab Continental Dynam, Shaanxi Key Lab Early Life & Environm, Xian 710069, Peoples R China
推荐引用方式 GB/T 7714	Wang, Mingkun,Peng, Shanchi,Zhang, Xingliang. Taxonomic revision of the Cambrian trilobite Abadiella and its stratigraphic significance in Gondwana[J]. JOURNAL OF ASIAN EARTH SCIENCES,2023,257:11.
APA	Wang, Mingkun,Peng, Shanchi,&Zhang, Xingliang.(2023).Taxonomic revision of the Cambrian trilobite Abadiella and its stratigraphic significance in Gondwana.JOURNAL OF ASIAN EARTH SCIENCES,257,11.
MLA	Wang, Mingkun,et al."Taxonomic revision of the Cambrian trilobite Abadiella and its stratigraphic significance in Gondwana".JOURNAL OF ASIAN EARTH SCIENCES 257(2023):11.