Lower Cambrian vertebrates from South China

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	Lower Cambrian vertebrates from South China
	Shu, DG ; Luo, HL ; Morris, SC ; Zhang, XL ; Hu, SX ; Chen, L ; Han, J ; Zhu, M; Li, Y ; Chen, LZ ; Shu, DG (reprint author), NW Univ Xian, Early Life Inst, Xian 710069, Peoples R China.
	1999-11-04
发表期刊	NATURE
ISSN	0028-0836
卷号	402 期号:6757 页码:42-46
文章类型	Article
摘要	The first fossil chordates are found in deposits from the Cambrian period (545-490 million years ago), but their earliest record is exceptionally sporadic and is often controversial, Accordingly, it has been difficult to construct a coherent phylogenetic synthesis far the basal chordates, Until now, the available soft-bodied remains have consisted almost entirely of cephalochordate-like animals from Burgess Shale-type faunas, Definite examples of agnathan fish do not occur until the Lower Ordovician (similar to 475 Myr BP), with a more questionable record extending into the Cambrian, The discovery of two distinct types of agnathan from the Lower Cambrian Chengjiang fossil-Lagerstatte is, therefore, a very significant extension of their range, One form is lamprey-like, whereas the other is closer to the more primitive hagfish, These finds imply that the first agnathans may have evolved in the earliest Cambrian, with the chordates arising from more primitive deuterostomes in Ediacaran times (latest Neoproterozoic, similar to 555 Myr BP), if not earlier.; The first fossil chordates are found in deposits from the Cambrian period (545-490 million years ago), but their earliest record is exceptionally sporadic and is often controversial, Accordingly, it has been difficult to construct a coherent phylogenetic synthesis far the basal chordates, Until now, the available soft-bodied remains have consisted almost entirely of cephalochordate-like animals from Burgess Shale-type faunas, Definite examples of agnathan fish do not occur until the Lower Ordovician (similar to 475 Myr BP), with a more questionable record extending into the Cambrian, The discovery of two distinct types of agnathan from the Lower Cambrian Chengjiang fossil-Lagerstatte is, therefore, a very significant extension of their range, One form is lamprey-like, whereas the other is closer to the more primitive hagfish, These finds imply that the first agnathans may have evolved in the earliest Cambrian, with the chordates arising from more primitive deuterostomes in Ediacaran times (latest Neoproterozoic, similar to 555 Myr BP), if not earlier.
WOS标题词	Science & Technology
URL	查看原文
关键词[WOS]	ORIGIN ; ORDOVICIAN ; EVOLUTION ; AUSTRALIA ; CHORDATE
收录类别	SCI
语种	英语
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
WOS记录号	WOS:000083638600035
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/3939
专题	中科院古脊椎所（2000年以后）古低等脊椎动物研究室
通讯作者	Shu, DG (reprint author), NW Univ Xian, Early Life Inst, Xian 710069, Peoples R China.
作者单位	1.NW Univ Xian, Early Life Inst, Xian 710069, Peoples R China 2.NW Univ Xian, Dept Geol, Xian 710069, Peoples R China 3.Yunnan Inst Geol Sci, Kunming, Peoples R China 4.Univ Cambridge, Dept Earth Sci, Cambridge CB2 3EQ, England 5.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Beijing 100044, Peoples R China
推荐引用方式 GB/T 7714	Shu, DG,Luo, HL,Morris, SC,et al. Lower Cambrian vertebrates from South China[J]. NATURE,1999,402(6757):42-46.
APA	Shu, DG.,Luo, HL.,Morris, SC.,Zhang, XL.,Hu, SX.,...&Shu, DG .(1999).Lower Cambrian vertebrates from South China.NATURE,402(6757),42-46.
MLA	Shu, DG,et al."Lower Cambrian vertebrates from South China".NATURE 402.6757(1999):42-46.

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