The postparietal shield of the Pragian dipnomorph Arquatichthys and its implications for the rhipidistian cranial anatomy

doi:10.1016/j.palwor.2019.07.004

IVPP-IR > 中科院古脊椎所（2000年以后）

	The postparietal shield of the Pragian dipnomorph Arquatichthys and its implications for the rhipidistian cranial anatomy
	Lu, Jing 1,2; Zhu, Min1,2,3
	2019-12-01
发表期刊	PALAEOWORLD
ISSN	1871-174X
卷号	28 期号:4 页码:543-549
摘要	Rhipidistians comprise dipnomorphs (the lungfish lineage) and tetrapodomorphs (the tetrapod lineage). Arquatichthys porosus Lu and Zhu, 2008 is a Pragian dipnomorph from the Posongchong Formation of Zhaotong, Yunnan, South China (similar to 409 million years ago, Early Devonian), previously represented by a lower jaw and few scattered scales. Here we describe a newly-discovered postparietal shield of Arquatichthys by means of high-resolution computed tomography. The cranial morphology of Arquatichthys resembles that of the basal dipnomorph Powichthys in having more than two supratemporal bones each side, more than one row of openings for sensory canals on the marginal bones, and a straight posterior margin of the shield. An intricate occipital artery system is present between the skull roof and neurocranium, as in Youngolepis and the tetrapodomorph Eusthenopteron. The discovery of the postparietal shield of Arquatichthys adds new evidence in the cranial evolution of rhipidistians, and helps to improve our understanding of the character transformations during the early diversification of rhipidistians. (C) 2019 Elsevier Ireland Ltd Elsevier B.V. and Nanjing Institute of Geology and Palaeontology, CAS. Published by Elsevier B.V. All rights reserved.
关键词	Early Devonian Dipnomorpha High-resolution computed tomography Cranial anatomy Character transformation
DOI	10.1016/j.palwor.2019.07.004
关键词[WOS]	POSONGCHONG FORMATION ; OLDEST COELACANTH ; SOUTH CHINA ; YUNNAN ; SARCOPTERYGII ; OSTEICHTHYES ; EVOLUTION
收录类别	SCI
语种	英语
资助项目	Strategic Priority Research Program of Chinese Academy of Sciences[XDB26000000] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDA19050102] ; National Natural Science Foundation of China[41872023,41530102] ; Key Research Program of Frontier Sciences, CAS[QYZDJ-SSW-DQC002]
WOS研究方向	Paleontology
WOS类目	Paleontology
WOS记录号	WOS:000499969100012
出版者	ELSEVIER
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/16795
专题	中科院古脊椎所（2000年以后）
通讯作者	Lu, Jing; Zhu, Min
作者单位	1.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut & Human Origins, Beijing 100044, Peoples R China 2.CAS Ctr Excellence Life & Paleoenvironm, Beijing 100044, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100039, Peoples R China
推荐引用方式 GB/T 7714	Lu, Jing,Zhu, Min. The postparietal shield of the Pragian dipnomorph Arquatichthys and its implications for the rhipidistian cranial anatomy[J]. PALAEOWORLD,2019,28(4):543-549.
APA	Lu, Jing,&Zhu, Min.(2019).The postparietal shield of the Pragian dipnomorph Arquatichthys and its implications for the rhipidistian cranial anatomy.PALAEOWORLD,28(4),543-549.
MLA	Lu, Jing,et al."The postparietal shield of the Pragian dipnomorph Arquatichthys and its implications for the rhipidistian cranial anatomy".PALAEOWORLD 28.4(2019):543-549.

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