Redescription and phylogenetic reassessment of Asialepidotus shingyiensis (Holostei: Halecomorphi) from the Middle Triassic (Ladinian) of China

doi:10.1093/zoolinnean/zlx105

	Redescription and phylogenetic reassessment of Asialepidotus shingyiensis (Holostei: Halecomorphi) from the Middle Triassic (Ladinian) of China
	Xu, Guang-Hui1 ; Ma, Xin-Ying 1,2
刊名	ZOOLOGICAL JOURNAL OF THE LINNEAN SOCIETY
	2018-09-01
卷号	184 期号:1 页码:95-114
关键词	evolution fossils neopterygian osteology phylogeny
ISSN号	0024-4082
DOI	10.1093/zoolinnean/zlx105
通讯作者	Xu, Guang-Hui(xuguanghui@ivpp.ac.cn)
英文摘要	The previously alleged 'semionotid' fish Asialepidotus shingyiensis from the Middle Triassic (Ladinian) marine deposits of Guizhou and Yunnan, China has recently been identified as a halecomorph, but its phylogenetic relationships with other halecomorphs remain controversial. This taxon was successively placed in different halecomorph orders: Amiiformes, Parasemionotiformes and 'Panxianichthyiformes'. Here, a detailed redescription of Asialepidotus is presented based upon a comparative study of the original material with 50 new specimens. Newly recognized anatomical information includes a V-shaped rostral, paired vomers, a toothed parasphenoid, a dermosphenotic with a canal-bearing innerorbital flange, a splint-like quadratojugal, a branch of the infraorbital sensory canal in the maxilla, and many elements in the hyoid and branchial apparatuses and the lower jaw. Results of a cladistic analysis incorporating these new data indicate that the 'Panxianichthyiformes' is a poorly defined, paraphylectic grade; Asialepidotus is not sister to Panxianichthys as previously suggested; instead, it is more derived than Panxianichthys and consists of the sister taxon of the clade Robustichthys plus Jurassic-Cretaceous ionoscopiforms. This phylogenetic reassessment of Asialepidotus extends the stratigraphic range of the Ionoscopiformes in China by similar to 4 Myr and supports the hypothesis that the early ionoscopiform diversification was already established by the Middle Triassic.
资助项目	National Natural Science Foundation of China (NSFC)[41672001] ; National Natural Science Foundation of China (NSFC)[41272002] ; National Natural Science Foundation of China (NSFC)[41688103] ; Chinese Academy of Sciences[XDB18000000] ; Chinese Academy of Sciences[05010000] ; Key Research Program of Frontier Sciences of Chinese Academy of Sciences[QYZDB-SSW-DQC040]
WOS关键词	STEM-NEOPTERYGIAN FISH ; SP NOV. ; ACTINOPTERYGII ; GENUS ; INTERRELATIONSHIPS ; DIVERSIFICATION ; THAILAND ; PROVINCE ; HISTORY ; GUIZHOU
WOS研究方向	Zoology
语种	英语
出版者	OXFORD UNIV PRESS
WOS记录号	WOS:000443581900004
资助机构	National Natural Science Foundation of China (NSFC) ; Chinese Academy of Sciences ; Key Research Program of Frontier Sciences of Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://119.78.100.205/handle/311034/8915]
专题	中国科学院古脊椎动物与古人类研究所
通讯作者	Xu, Guang-Hui
作者单位	1.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut & Human Origins, Beijing 100044, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Xu, Guang-Hui,Ma, Xin-Ying. Redescription and phylogenetic reassessment of Asialepidotus shingyiensis (Holostei: Halecomorphi) from the Middle Triassic (Ladinian) of China[J]. ZOOLOGICAL JOURNAL OF THE LINNEAN SOCIETY,2018,184(1):95-114.
APA	Xu, Guang-Hui,&Ma, Xin-Ying.(2018).Redescription and phylogenetic reassessment of Asialepidotus shingyiensis (Holostei: Halecomorphi) from the Middle Triassic (Ladinian) of China.ZOOLOGICAL JOURNAL OF THE LINNEAN SOCIETY,184(1),95-114.
MLA	Xu, Guang-Hui,et al."Redescription and phylogenetic reassessment of Asialepidotus shingyiensis (Holostei: Halecomorphi) from the Middle Triassic (Ladinian) of China".ZOOLOGICAL JOURNAL OF THE LINNEAN SOCIETY 184.1(2018):95-114.