Fuxianhuiids are mandibulates and share affinities with total-group Myriapoda

doi:10.1144/jgs2020-246

	Fuxianhuiids are mandibulates and share affinities with total-group Myriapoda
	Aria, Cedric 1,2,4; Zhao, Fangchen 1,2; Zhu, Maoyan 1,2,3
刊名	JOURNAL OF THE GEOLOGICAL SOCIETY
	2021-03-22
页码	13
ISSN号	0016-7649
DOI	10.1144/jgs2020-246
通讯作者	Aria, Cedric(cedric.aria@protonmail.com) ; Zhu, Maoyan(myzhu@nigpas.ac.cn)
英文摘要	In spite of their unrivalled ecological success, the origins of terrestrial mandibulates have long remained virtually unknown. In recent years, claims have been made based on phylogenetic results that fuxianhuiids, iconic fossils of the Chengjiang biota and purported basal euarthropods, were in fact mandibulates, allied with the problematic euthycarcinoids as the closest sister-group to Mandibulata or even stem myriapods. A re-examination of euthycarcinoid mouthparts has since brought additional support to this view. Here, we reinvestigated the anterior anatomy of the Cambrian euarthropod Fuxianhuia and its relatives. We demonstrate that the fuxianhuiid head is that of a mandibulate, sharing similarities with hymenocarines, including a limbless intercalary segment. The hypostome is a sub-triangular sclerite partially fused but anatomically independent from a large, bilobed labral plate, as observed in many extant mandibulate taxa as well as euthycarcinoids. The so-called 'specialized post-antenn(ular) appendages' are therefore the mandibles, with a tripartite palp and large dented gnathal lobe partially covered by the hypostome-labrum complex. Under a 'deep split' phylogenetic scenario, Fuxianhuia and its relatives are here resolved as sister-group to crown Mandibulata.
资助项目	Strategic Priority Research Program (B) of the Chinese Academy of Sciences[XDB26000000] ; National Natural Science Foundation of China[41921002] ; National Natural Science Foundation of China[42072006] ; State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences[20181105]
WOS关键词	EUTHYCARCINOID ARTHROPODS ; NERVOUS-SYSTEM ; EVOLUTION ; PHYLOGENY ; HEAD ; ORIGIN ; SEGMENTATION ; ORGANIZATION ; MORPHOLOGY ; INSIGHTS
WOS研究方向	Geology
语种	英语
出版者	GEOLOGICAL SOC PUBL HOUSE
WOS记录号	WOS:000631007600001
资助机构	Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.nigpas.ac.cn/handle/332004/37981]
专题	中国科学院南京地质古生物研究所
通讯作者	Aria, Cedric; Zhu, Maoyan
作者单位	1.Chinese Acad Sci, State Key Lab Palaeobiol & Stratig, Nanjing Inst Geol & Palaeontol, Nanjing 210008, Peoples R China 2.Chinese Acad Sci, Ctr Excellence Life & Palaeoenvironm, Nanjing 210008, Peoples R China 3.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China 4.8 Rue de la Fonderie, F-68100 Mulhouse, France
推荐引用方式 GB/T 7714	Aria, Cedric,Zhao, Fangchen,Zhu, Maoyan. Fuxianhuiids are mandibulates and share affinities with total-group Myriapoda[J]. JOURNAL OF THE GEOLOGICAL SOCIETY,2021:13.
APA	Aria, Cedric,Zhao, Fangchen,&Zhu, Maoyan.(2021).Fuxianhuiids are mandibulates and share affinities with total-group Myriapoda.JOURNAL OF THE GEOLOGICAL SOCIETY,13.
MLA	Aria, Cedric,et al."Fuxianhuiids are mandibulates and share affinities with total-group Myriapoda".JOURNAL OF THE GEOLOGICAL SOCIETY (2021):13.