Late Ordovician sponge spicules from the Yangtze Platform, South China: Biostratigraphical and palaeobiogeographical significance

doi:10.1016/j.jseaes.2024.106380

NIGPAS OpenIR

	Late Ordovician sponge spicules from the Yangtze Platform, South China: Biostratigraphical and palaeobiogeographical significance
通讯作者	Li, Lixia([email protected])
	Li, Lixia1 ; Yan, Guanzhou 1; Xin, Wei 1; Gong, Fangyi 1; Lehnert, Oliver 2; Wu, Rongchang1
	2025
发表期刊	JOURNAL OF ASIAN EARTH SCIENCES
ISSN	1367-9120
卷号	277 页码:15
摘要	A diverse and abundant isolated sponge spicule assemblage of Late Ordovician age is first reported from the western margin of the Yangtze Platform in South China. The spicule assemblage was recovered from argillaceous limestone sampled for conodonts. It includes 14 types which can be split into two categories: hexactinellid spicules and demosponge spicules. The assemblage primarily comprises hexactines and their derivatives, including not only some distinctive types such as Kometia cruciformis, but also large numbers of morphotypes that are quite common and diagnostic for hexactinellids, e.g. swollen hexactines, curved hexactines, and stauractines. Demosponge spicule types are represented by tetraxons, and various desmas typical for lithistids also occur. A highly modified hexactine, Kometia cruciformis, is recovered from China for the first time. This record represents currently the only recovery of such spicules from strata outside of Australia, and is coeval to the assemblage known from the Malongulli Formation. The presence of such unique modified hexactines (Kometia) in both timeequivalent assemblages suggests that certain spicules may have potential importance in biostratigraphic correlations and palaeobiogeographical interpretations, demonstrating the dispersal of taxa and their migration along the peri-Gondwana shelf areas during the Ordovician, driven by ocean current systems. The Late Ordovician sponge spicule assemblage from the Yangtze Platform provides new perspectives for investigating phylogeny, biostratigraphy, and palaeobiogeography of Palaeozoic sponges, and promotes some understanding of macroevolution in siliceous sponges.
关键词	Sponge spicules Biostratigraphy Palaeobiogeography Late Ordovician South China
DOI	10.1016/j.jseaes.2024.106380
收录类别	SCI
语种	英语
关键词[WOS]	LITHISTID SPONGES ; MIDDLE ; CLASSIFICATION ; ASSEMBLAGE ; HEXACTINELLIDA ; CONODONTS ; SEDIMENTS ; PORIFERA ; FAUNAS ; ANHUI
资助项目	National Natural Science Foundation of China (NSFC)[42072005] ; National Natural Science Foundation of China (NSFC)[41702005] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB26000000] ; IGCP[735]
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:001352951800001
项目资助者	National Natural Science Foundation of China (NSFC) ; Strategic Priority Research Program of the Chinese Academy of Sciences ; IGCP
出版者	PERGAMON-ELSEVIER SCIENCE LTD
文献类型	期刊论文
条目标识符	http://ir.nigpas.ac.cn/handle/332004/44592
专题	中国科学院南京地质古生物研究所
通讯作者	Li, Lixia
作者单位	1.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, Nanjing 210008, Peoples R China 2.Friedrich Alexander Univ Erlangen Nurnberg FAU, Geozent Nordbayern, D-91054 Erlangen, Germany
第一作者单位	中国科学院南京地质古生物研究所
通讯作者单位	中国科学院南京地质古生物研究所
推荐引用方式 GB/T 7714	Li, Lixia,Yan, Guanzhou,Xin, Wei,et al. Late Ordovician sponge spicules from the Yangtze Platform, South China: Biostratigraphical and palaeobiogeographical significance[J]. JOURNAL OF ASIAN EARTH SCIENCES,2025,277:15.
APA	Li, Lixia,Yan, Guanzhou,Xin, Wei,Gong, Fangyi,Lehnert, Oliver,&Wu, Rongchang.(2025).Late Ordovician sponge spicules from the Yangtze Platform, South China: Biostratigraphical and palaeobiogeographical significance.JOURNAL OF ASIAN EARTH SCIENCES,277,15.
MLA	Li, Lixia,et al."Late Ordovician sponge spicules from the Yangtze Platform, South China: Biostratigraphical and palaeobiogeographical significance".JOURNAL OF ASIAN EARTH SCIENCES 277(2025):15.