Growth patterns of palaeoscolecid sclerites from the Furongian (upper Cambrian) Wangcun section, western Hunan, South China

doi:10.1016/j.palwor.2023.03.005

NIGPAS OpenIR

	Growth patterns of palaeoscolecid sclerites from the Furongian (upper Cambrian) Wangcun section, western Hunan, South China
通讯作者	Zhang, Hua-Qiao([email protected])
	Xian, Xiao-Feng 1,2,3; Eriksson, Mats E.3; Zhang, Hua-Qiao1
	2024-04-01
发表期刊	PALAEOWORLD
ISSN	1871-174X
卷号	33 期号:2 页码:284-298
摘要	In a strict sense, palaeoscolecids are a group of cycloneuralian worms (ecdysozoans) characterized by the tessellation of trunk sclerites, which are differentiated into plates, platelets, and microplates. The Wangcun section in western Hunan, South China, which represents the Furongian Series (upper Cambrian), has yielded a rich and diverse collection of palaeoscolecids. However, there is uncertainty about how the morphology and arrangement of their sclerites change during ontogeny and the potential taxonomic implications of these changes. Here, we report new phosphatized trunk fragments from the Wangcun section, which are assigned to Dispinoscolex decorus, Hunanoscolex campus (= Ornatoscolex hunanensis), and Schistoscolex hunanensis. Trunk fragments of the same species with different diameter indicate the presence of several ontogenetic stages, and careful assessment revealed two types of sclerite growth patterns. One is represented by D. decorus and possibly also by S. hunanensis, in which the worm growth is accompanied mainly by the enlargement of the plates, with almost no change in the median annular zones and annulation boundaries. The other type is represented by H. campus, in which the worm growth is accompanied mainly by the widening of the median annular zones and annulation boundaries inserted with continuously more platelets and microplates. Because the specimens originally assigned to H. campus seem to represent late ontogenetic stages of O. hunanensis, we propose that H. campus is a senior synonym of the latter. This study underscores the importance of ontogenetic variation of sclerites for the taxonomy of palaeoscolecids, and highlights the significance of Orsten-type fossils in the study of metazoan ontogeny. (c) 2023 Elsevier B.V. and Nanjing Institute of Geology and Palaeontology, CAS. All rights reserved.
关键词	Palaeoscolecida Cycloneuralia sclerite growth patterns Cambrian Furongian Wangcun section China
DOI	10.1016/j.palwor.2023.03.005
收录类别	SCI
语种	英语
关键词[WOS]	CYCLONEURALIANS ; WORMS ; ZHANGJIAGOU ; LAGERSTATTE ; ARTHROPODS ; MARKUELIA ; CUTICLES ; AFFINITY ; ANATOMY ; MIDDLE
资助项目	State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences[20191104] ; National Natural Science Foundation of China[42172020] ; National Natural Science Foundation of China[42130206] ; Swedish Research Council[2019-03516] ; National Key R&D Program of China[2022YFF0802700]
WOS研究方向	Paleontology
WOS类目	Paleontology
WOS记录号	WOS:001233452000001
项目资助者	State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences ; National Natural Science Foundation of China ; Swedish Research Council ; National Key R&D Program of China
出版者	ELSEVIER
文献类型	期刊论文
条目标识符	http://ir.nigpas.ac.cn/handle/332004/43801
专题	中国科学院南京地质古生物研究所
通讯作者	Zhang, Hua-Qiao
作者单位	1.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, Ctr Excellence Life & Paleoenvironm, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Lund Univ, Dept Geol, Solvegatan 12, SE-22362 Lund, Sweden
推荐引用方式 GB/T 7714	Xian, Xiao-Feng,Eriksson, Mats E.,Zhang, Hua-Qiao. Growth patterns of palaeoscolecid sclerites from the Furongian (upper Cambrian) Wangcun section, western Hunan, South China[J]. PALAEOWORLD,2024,33(2):284-298.
APA	Xian, Xiao-Feng,Eriksson, Mats E.,&Zhang, Hua-Qiao.(2024).Growth patterns of palaeoscolecid sclerites from the Furongian (upper Cambrian) Wangcun section, western Hunan, South China.PALAEOWORLD,33(2),284-298.
MLA	Xian, Xiao-Feng,et al."Growth patterns of palaeoscolecid sclerites from the Furongian (upper Cambrian) Wangcun section, western Hunan, South China".PALAEOWORLD 33.2(2024):284-298.