A primitive fish provides key characters bearing on deep osteichthyan phylogeny

IVPP-IR > 中科院古脊椎所（2000年以后）

	A primitive fish provides key characters bearing on deep osteichthyan phylogeny
	Zhu, M; Yu, XB ; Wang, W ; Zhao, WJ ; Jia, LT ; zhumin@ivpp.ac.cn
	2006-05-04
发表期刊	NATURE
ISSN	0028-0836
卷号	441 期号:7089 页码:77-80
文章类型	Article
摘要	Osteichthyans, or bony vertebrates, include actinopterygians (teleosts and their relatives) and sarcopterygians (coelacanths, lungfishes and tetrapods). Despite features found in basal actinopterygians (for example, Dialipina and Ligulalepis)(1-3) and basal sarcopterygians (for example, Psarolepis and Achoania)(4,5), the morphological gap between the two lineages remains wide and how sarcopterygians developed a dermal surface covering known as cosmine (composed of a pore-canal network and a single layer of odontodes and enamel) is still poorly known(6-10). Here we describe a primitive fossil fish, Meemannia eos gen. et sp. nov., that possesses an actinopterygian-like skull roof and a cosmine-like dermal surface combining a pore-canal network (found in various fossil sarcopterygians) with superimposed layers of odontodes and enamel (previously known in actinopterygians and some acanthodians(11-13)). This 405-million-year-old fish from the Lower Devonian of Yunnan (China) demonstrates that cosmine in many fossil sarcopterygians arose step by step through the acquisition of a pore-canal network followed by the subsequently developed ability to resorb previous generations of odontodes and enamel. Meemannia provides key characters for studying deep osteichthyan phylogeny and indicates a possible morphotype for the common ancestor of actinopterygians and sarcopterygians.
关键词	Lungfish Australia Cosmine
WOS标题词	Science & Technology
URL	查看原文
关键词[WOS]	LUNGFISH ; AUSTRALIA ; COSMINE
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:000237248600035
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/4999
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	zhumin@ivpp.ac.cn
作者单位	1.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Beijing 100044, Peoples R China 2.Kean Univ, Dept Biol Sci, Union, NJ 07083 USA
推荐引用方式 GB/T 7714	Zhu, M,Yu, XB,Wang, W,et al. A primitive fish provides key characters bearing on deep osteichthyan phylogeny[J]. NATURE,2006,441(7089):77-80.
APA	Zhu, M,Yu, XB,Wang, W,Zhao, WJ,Jia, LT,&zhumin@ivpp.ac.cn.(2006).A primitive fish provides key characters bearing on deep osteichthyan phylogeny.NATURE,441(7089),77-80.
MLA	Zhu, M,et al."A primitive fish provides key characters bearing on deep osteichthyan phylogeny".NATURE 441.7089(2006):77-80.

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