New artiopodan euarthropods from the Chengjiang fauna (Cambrian, Stage 3) at Malong, Yunnan, China

doi:10.4202/app.01080.2023

	New artiopodan euarthropods from the Chengjiang fauna (Cambrian, Stage 3) at Malong, Yunnan, China
	Zhu, Yuyan ; Zeng, Han 2; Liu, Yao ; Zhao, Fangchen
刊名	ACTA PALAEONTOLOGICA POLONICA
	2023
卷号	68 期号:3 页码:427-440
关键词	Arthropoda Trilobitomorpha Vicissicaudata Burgess Shale-type fossils exceptional preservation Lagerstatten Cambrian Yu'anshan Formation Chengjiang
ISSN号	0567-7920
DOI	10.4202/app.01080.2023
通讯作者	Zeng, Han(hzeng@nigpas.ac.cn)
英文摘要	The artiopodans, consisting of trilobites and their relatives, were a major euarthropod group in the Paleozoic. Since the first discovery ofNaraoia from the Chengjiang fauna, a significant number of artiopodans have been subsequently found in China. Here we describe three new artiopodan species from the lower Cambrian Chengjiang fauna (Cambrian Series 2, Stage 3) at Malong, Yunnan, China. Zhugeia acuticaudata gen. et sp. nov. is defined by a semielliptical cephalon with long genal spines, nine overlapping thoracic tergites, and a pygidium with an elongated needle-like median spine. Its cephalic shield covers multiple anterior thoracic tergites. Tonglaiia bispinosa gen. et sp. nov. is defined by a suboval cephalon, seven thoracic tergites, and a micropygous pygidium with a pair of parallel posteriormost spines. Sidneyia malongensis sp. nov., a new occurrence of Sidneyia from South China, is defined by a crescent-shaped cephalon, eight imbricated tergites, and an abdomen consisting of two cylindrical segments and a tail fluke. The evolutionary affinities of these new taxa are reconstructed and discussed in a phylogenetic context. Phylogenetic analyses resolve Z. acuticaudata among the xandarellids and T. bispinosa gen. et sp. nov. as a trilobitomorph with an uncertain placement, The discovery of three new species improves the biodiversity of artiopodans from the Cambrian and the Chengjiang fauna.
资助项目	National Key Research and Development Program of China[2021YFA0718100] ; National Key Research and Development Program of China[2022YFF0800100] ; National Natural Science Foundation of China[42272019] ; National Natural Science Foundation of China[42072006] ; Youth Innovation Promotion Association of Chinese Academy of Sciences[2023322]
WOS关键词	ARTHROPOD SIDNEYIA-INEXPECTANS ; BURGESS SHALE ; SERIES 2 ; BIOTA ; LAGERSTATTE ; PHYLOGENY ; DIVERSITY ; EVOLUTION ; ORIGIN
WOS研究方向	Paleontology
语种	英语
出版者	INST PALEOBIOLOGII PAN
WOS记录号	WOS:001083719500003
资助机构	National Key Research and Development Program of China ; National Natural Science Foundation of China ; Youth Innovation Promotion Association of Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.nigpas.ac.cn/handle/332004/43194]
专题	中国科学院南京地质古生物研究所
通讯作者	Zeng, Han
作者单位	1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, State Key Lab Palaeobiol & Stratig, Nanjing Inst Geol & Palaeontol, Nanjing 210008, Peoples R China
推荐引用方式 GB/T 7714	Zhu, Yuyan,Zeng, Han,Liu, Yao,et al. New artiopodan euarthropods from the Chengjiang fauna (Cambrian, Stage 3) at Malong, Yunnan, China[J]. ACTA PALAEONTOLOGICA POLONICA,2023,68(3):427-440.
APA	Zhu, Yuyan,Zeng, Han,Liu, Yao,&Zhao, Fangchen.(2023).New artiopodan euarthropods from the Chengjiang fauna (Cambrian, Stage 3) at Malong, Yunnan, China.ACTA PALAEONTOLOGICA POLONICA,68(3),427-440.
MLA	Zhu, Yuyan,et al."New artiopodan euarthropods from the Chengjiang fauna (Cambrian, Stage 3) at Malong, Yunnan, China".ACTA PALAEONTOLOGICA POLONICA 68.3(2023):427-440.