Galeaspid anatomy and the origin of vertebrate paired appendages

doi:10.1038/s41586-022-04897-6

IVPP-IR > 中科院古脊椎所（2000年以后）

	Galeaspid anatomy and the origin of vertebrate paired appendages
	Gai, Zhikun 1,2,3; Li, Qiang1,4 ; Ferron, Humberto G.5,6; Keating, Joseph N.5; Wang, Junqing 1; Donoghue, Philip C. J.5; Zhu, Min1,2,3
	2022-09-29
发表期刊	NATURE
ISSN	0028-0836
卷号	609 期号:7929 页码:959-+
摘要	Paired fins are a major innovation(1,2) that evolved in the jawed vertebrate lineage after divergence from living jawless vertebrates(3). Extinct jawless armoured stem gnathostomes show a diversity of paired body-wall extensions, ranging from skeletal processes to simple flaps(4). By contrast, osteostracans (a sistergroup to jawed vertebrates) are interpreted to have the first true paired appendages in a pectoral position, with pelvic appendages evolving later in association with jaws(5). Here we show, on the basis of articulated remains of Tujiaaspis vividus from the Silurian period of China, that galeaspids (a sister group to both osteostracans and jawed vertebrates) possessed three unpaired dorsal fins, an approximately symmetrical hypochordal tail and a pair of continuous, branchial-to-caudal ventrolateral fins. The ventrolateral fins are similar to paired fin flaps in other stem gnathostomes, and specifically to the ventrolateral ridges of cephalaspid osteostracans that also possess differentiated pectoral fins. The ventrolateral fins are compatible with aspects of the fin-fold hypothesis for the origin of vertebrate paired appendages(6-10). Galeaspids have a precursor condition to osteostracans and jawed vertebrates in which paired fins arose initially as continuous pectoral-pelvic lateral fins that our computed fluid-dynamics experiments show passively generated lift. Only later in the stem lineage to osteostracans and jawed vertebrates did pectoral fins differentiate anteriorly. This later differentiation was followed by restriction of the remaining field of fin competence to a pelvic position, facilitating active propulsion and steering.
DOI	10.1038/s41586-022-04897-6
关键词[WOS]	NEURAL CREST ; R PACKAGE ; EVOLUTION ; FINS ; PHYLOGENY ; POLARITY ; GENES ; CHINA
收录类别	SCI
语种	英语
资助项目	Key Research Program of Frontier Sciences, CAS[QYZDB-SSW-DQC040] ; Strategic Priority Research Program of CAS[XDA19050102] ; Strategic Priority Research Program of CAS[XDB26000000] ; National Natural Science Foundation of China[42072026] ; National Natural Science Foundation of China[41972006] ; National Natural Science Foundation of China[42130209]
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
WOS记录号	WOS:000861899600003
出版者	NATURE PORTFOLIO
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/22027
专题	中科院古脊椎所（2000年以后）
通讯作者	Donoghue, Philip C. J.; Zhu, Min
作者单位	1.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key CAS Lab Vertebrate Evolut & Human Origins, Beijing, Peoples R China 2.CAS Ctr Excellence Life & Paleoenvironm, Beijing, Peoples R China 3.Univ Chinese Acad Sci, Beijing, Peoples R China 4.Qujing Normal Univ, Res Ctr Nat Hist & Culture, Qujing, Peoples R China 5.Univ Bristol, Bristol Palaeobiol Grp, Sch Earth Sci, Bristol, Avon, England 6.Univ Valencia, Inst Cavanilles Biodiversidad & Biol Evolut, Valencia, Spain
推荐引用方式 GB/T 7714	Gai, Zhikun,Li, Qiang,Ferron, Humberto G.,et al. Galeaspid anatomy and the origin of vertebrate paired appendages[J]. NATURE,2022,609(7929):959-+.
APA	Gai, Zhikun.,Li, Qiang.,Ferron, Humberto G..,Keating, Joseph N..,Wang, Junqing.,...&Zhu, Min.(2022).Galeaspid anatomy and the origin of vertebrate paired appendages.NATURE,609(7929),959-+.
MLA	Gai, Zhikun,et al."Galeaspid anatomy and the origin of vertebrate paired appendages".NATURE 609.7929(2022):959-+.

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