Musculature of an Early Cambrian cycloneuralian animal

doi:10.1098/rspb.2023.1803

	Musculature of an Early Cambrian cycloneuralian animal
	Zhang, Huaqiao 5; Xiao, Shuhai 4; Eriksson, Mats E.3; Duan, Baichuan 2; Maas, Andreas 1
刊名	PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
	2023-10-11
卷号	290 期号:2008 页码:10
关键词	introvert musculature Priapulida Scalidophora Cycloneuralia Cambrian Fortunian South China
ISSN号	0962-8452
DOI	10.1098/rspb.2023.1803
通讯作者	Zhang, Huaqiao(hqzhang@nigpas.ac.cn) ; Xiao, Shuhai(xiao@vt.edu)
英文摘要	Cycloneuralians are ecdysozoans with a fossil record extending to the Early Cambrian Fortunian Age and represented mostly by cuticular integuments. However, internal anatomies of Fortunian cycloneuralians are virtually unknown, hampering our understanding of their functional morphology and phylogenetic relationships. Here we report the exceptional preservation of cycloneuralian introvert musculature in Fortunian rocks of South China. The musculature consists of an introvert body-wall muscular grid of four circular and 36 radially arranged longitudinal muscle bundles, as well as an introvert circular muscle associated with 19 roughly radially arranged, short retractors. Collectively, these features support at least a scalidophoran affinity, and the absence of muscles associated with a mouth cone and scalids further indicates a priapulan affinity. As in modern scalidophorans, the fossil musculature, and particularly the introvert circular muscle retractors, may have controlled introvert inversion and facilitated locomotion and feeding. This work supports the evolution of scalidophoran-like or priapulan-like introvert musculature in cycloneuralians at the beginning of the Cambrian Period.
资助项目	We are greatly indebted to two anonymous reviewers for their detailed and constructive suggestions and comments.
WOS关键词	BODY-WALL ; EVOLUTION ; ULTRASTRUCTURE ; INTROVERT ; ARCHITECTURE ; ASSEMBLAGES ; ZHANGJIAGOU ; CNIDARIANS ; ECDYSOZOA ; PHARYNX
WOS研究方向	Life Sciences & Biomedicine - Other Topics ; Environmental Sciences & Ecology ; Evolutionary Biology
语种	英语
出版者	ROYAL SOC
WOS记录号	WOS:001089115400001
资助机构	We are greatly indebted to two anonymous reviewers for their detailed and constructive suggestions and comments.
内容类型	期刊论文
源URL	[http://ir.nigpas.ac.cn/handle/332004/43227]
专题	中国科学院南京地质古生物研究所
通讯作者	Zhang, Huaqiao; Xiao, Shuhai
作者单位	1.Galgenackerweg 25, D-89134 Blaustein, Germany 2.Minist Nat Resource, Inst Oceanog 1, Key Lab Marine Geol & Metallogeny, Qingdao 266061, Peoples R China 3.Lund Univ, Dept Geol, S-22362 Lund, Sweden 4.Virginia Tech, Dept Geosci, Blacksburg, VA 24061 USA 5.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Huaqiao,Xiao, Shuhai,Eriksson, Mats E.,et al. Musculature of an Early Cambrian cycloneuralian animal[J]. PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES,2023,290(2008):10.
APA	Zhang, Huaqiao,Xiao, Shuhai,Eriksson, Mats E.,Duan, Baichuan,&Maas, Andreas.(2023).Musculature of an Early Cambrian cycloneuralian animal.PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES,290(2008),10.
MLA	Zhang, Huaqiao,et al."Musculature of an Early Cambrian cycloneuralian animal".PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES 290.2008(2023):10.