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	Radiolarians from Cambrian Series 2 Niujiaohe Formation in southern Jiangxi, South China
通讯作者	Ma, Qiang-Fen([email protected])
	Huang, Teng1; Ma, Qiang-Fen2; Dong, Xiao-Xin1; Xu, Guo-Zhen3; Yi, Yu-Hao4
	2025-06-01
发表期刊	PALAEOWORLD
ISSN	1871-174X
卷号	34期号:3页码:14
摘要	The origin and early evolution of radiolarian fossils have always provoked great interest among paleontologists. Yet, little is known about the earliest morphological and evolutionary characteristics of radiolarians largely due to the lack of documentation of early Cambrian radiolarian fossils. Herein, we conduct a thorough examination of the basinal Niujiaohe Formation in Chongyi County of southern Jiangxi and report two types of radiolarians: a large number of spherical radiolarians and a minor occurrence of ellipsoidal radiolarian fossils with bipolar rodded spines. The lengths of the spines on ellipsoid radiolarian fossils vary, and typically, the main spines are slightly offset from the polar axis, resulting in an asymmetrical appearance in some specimens. Through systematic taxonomic examination, this radiolarian fossil form is tentatively identified as Beothuka sp. of the spherical polycystine group. The genus Beothuka is commonly found in the Early Ordovician and has not yet been reported in the early Cambrian. Combined with previous reports, four species of radiolarians in three genera are identified from the Niujiaohe Formation in South China, including Paraantygopora porosa, Paraantygopora sp., spherical radiolarian, and Beothuka sp. Overall, the radiolarian fossils in the Niujiaohe Formation are characterized by low diversity and small size, in contrast to the relatively more diverse fauna found in the contemporary shallow-water Shuijingtuo Formation. Therefore, we speculate that radiolarians may have initially originated in shallow water areas and gradually expanded to deep water. This study further enriches the fossil record of the Cambrian Series 2 radiolarians. Combined with relevant data from South China, the radiolarian fauna began to exhibit diversity and complex morphology, indicating the presence of various, advanced spherical-skeletons in early radiolarians, and radiolarians from the early Cambrian appeared to display multiple evolutionary trends. (c) 2024 Elsevier B.V. and Nanjing Institute of Geology and Palaeontology, CAS. All rights are reserved, including those for text and data mining, AI training, and similar technologies.
关键词	Radiolarian southern Jiangxi Niujiaohe Formation Cambrian Series 2
DOI	10.1016/j.palwor.2024.09.008
收录类别	SCI
语种	英语
关键词[WOS]	COW HEAD GROUP ; NY-FRIESLAND OROGEN ; ARENIG RADIOLARIANS ; PORT COMPLEX ; NANHUA BASIN ; ORDOVICIAN ; ASSEMBLAGE ; SEDIMENTARY ; EVOLUTION ; ISLANDS
资助项目	National Natural Science Foundation of China (NSFC)[42462001] ; Guangxi Natural Science Foundation[2023GXNSFBA026273] ; Specific Research Project of Guangxi for Research Bases and Talents[Guike AD20159027] ; Hubei Key Laboratory of Paleontology and Geological Environment Evolution, Wuhan Center of China Geological Survey[PEL-202304]
WOS研究方向	Paleontology
WOS类目	Paleontology
WOS记录号	WOS:001420330400001
项目资助者	National Natural Science Foundation of China (NSFC) ; Guangxi Natural Science Foundation ; Specific Research Project of Guangxi for Research Bases and Talents ; Hubei Key Laboratory of Paleontology and Geological Environment Evolution, Wuhan Center of China Geological Survey
出版者	ELSEVIER
文献类型	期刊论文
条目标识符	http://ir.nigpas.ac.cn/handle/332004/44896
专题	中国科学院南京地质古生物研究所
通讯作者	Ma, Qiang-Fen
作者单位	1.Guilin Univ Technol, Coll Earth Sci, Guilin 541004, Peoples R China 2.Guilin Univ Technol, Collaborat Innovat Ctr Explorat Nonferrous Met Dep, Guilin 541004, Peoples R China 3.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, Nanjing 210008, Peoples R China 4.Sinopec Jianghan Oilfield Co, Explorat & Dev Res Inst, Wuhan 430223, Peoples R China
推荐引用方式 GB/T 7714	Huang, Teng,Ma, Qiang-Fen,Dong, Xiao-Xin,et al. Radiolarians from Cambrian Series 2 Niujiaohe Formation in southern Jiangxi, South China[J]. PALAEOWORLD,2025,34(3):14.
APA	Huang, Teng,Ma, Qiang-Fen,Dong, Xiao-Xin,Xu, Guo-Zhen,&Yi, Yu-Hao.(2025).Radiolarians from Cambrian Series 2 Niujiaohe Formation in southern Jiangxi, South China.PALAEOWORLD,34(3),14.
MLA	Huang, Teng,et al."Radiolarians from Cambrian Series 2 Niujiaohe Formation in southern Jiangxi, South China".PALAEOWORLD 34.3(2025):14.

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