A new osteichthyan from the late Silurian of Yunnan, China

doi:10.1371/journal.pone.0170929

CORC > 古脊椎动物与古人类研究所 > 中国科学院古脊椎动物与古人类研究所 > 古低等脊椎动物研究室

	A new osteichthyan from the late Silurian of Yunnan, China
	Choo, Brian 1,2; Zhu, Min 1,3; Qu, Qingming 4,5; Yu, Xiaobo 1,6; Jia, Liantao 1; Zhao, Wenjin 1,3
刊名	PLOS ONE
	2017-03-08
卷号	12 期号:3
DOI	10.1371/journal.pone.0170929
文献子类	Article
英文摘要	Our understanding of early gnathostome evolution has been hampered by a generally scant fossil record beyond the Devonian. Recent discoveries from the late Silurian Xiaoxiang Fauna of Yunnan, China, have yielded significant new information, including the earliest articulated osteichthyan fossils from the Ludlow-aged Kuanti Formation. Here we describe the partial postcranium of a new primitive bony fish from the Kuanti Formation that represents the second known taxon of pre-Devonian osteichthyan revealing articulated remains. The new form, Sparalepis tingi gen. et sp. nov., displays similarities with Guiyu and Psarolepis, including a spine-bearing pectoral girdle and a placoderm-like dermal pelvic girdle, a structure only recently identified in early osteichthyans. The squamation with particularly thick rhombic scales shares an overall morphological similarity to that of Psarolepis. However, the anterior flank scales of Sparalepis possess an unusual interlocking system of ventral bulges embraced by dorsal concavities on the outer surfaces. A phylogenetic analysis resolves Sparalepis within a previously recovered cluster of stem-sarcopterygians including Guiyu, Psarolepis and Achoania. The high diversity of osteichthyans from the Ludlow of Yunnan strongly contrasts with other Silurian vertebrate assemblages, suggesting that the South China block may have been an early center of diversification for early gnathostomes, well before the advent of the Devonian "Age of Fishes".
WOS关键词	RAY-FINNED FISHES ; SCALE MORPHOLOGY ; SHEDS LIGHT ; BONY FISHES ; ORIGIN ; GNATHOSTOME ; ANDREOLEPIS ; PLACODERM ; VERTEBRATES ; CHARACTERS
WOS研究方向	Science & Technology - Other Topics
语种	英语
WOS记录号	WOS:000396073700092
资助机构	National Nature Science Foundation of China(41530102) ; Chinese Academy of Sciences(QYZDJ-SSW-DQC002) ; Australian Research Council(DE160100247)
内容类型	期刊论文
源URL	[http://124.16.247.212/handle/311034/7499]
专题	古脊椎动物与古人类研究所_古低等脊椎动物研究室
作者单位	1.Chinese Acad Sci, Key Lab Vertebrate Evolut & Human Origins, Inst Vertebrate Paleontol & Paleoanthropol, Beijing, Peoples R China 2.Flinders Univ S Australia, Sch Biol Sci, Adelaide, SA, Australia 3.Univ Chinese Acad Sci, Coll Earth Sci, Beijing, Peoples R China 4.Uppsala Univ, Dept Physiol & Dev Biol, Subdept Evolutionary Organismal Biol, Uppsala, Sweden 5.Univ Ottawa, Ctr Adv Res Environm Genom, Ottawa, ON, Canada 6.Kean Univ, Dept Biol Sci, Union, NJ USA
推荐引用方式 GB/T 7714	Choo, Brian,Zhu, Min,Qu, Qingming,et al. A new osteichthyan from the late Silurian of Yunnan, China[J]. PLOS ONE,2017,12(3).
APA	Choo, Brian,Zhu, Min,Qu, Qingming,Yu, Xiaobo,Jia, Liantao,&Zhao, Wenjin.(2017).A new osteichthyan from the late Silurian of Yunnan, China.PLOS ONE,12(3).
MLA	Choo, Brian,et al."A new osteichthyan from the late Silurian of Yunnan, China".PLOS ONE 12.3(2017).