discoveryoffossilnemacheilidscypriniformesteleosteipiscesfromthetibetanplateauchina

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	discoveryoffossilnemacheilidscypriniformesteleosteipiscesfromthetibetanplateauchina
	Wang Ning; Chang Mee Mann
	2012
发表期刊	sciencechinaearthsciences
ISSN	1674-7313
卷号	55 期号:5 页码:714
摘要	Here described are the nemacheilid fossils from the Pliocene Lower Member of Qiangtang Formation in the Kunlun Pass Basin,northeastern Tibetan Plateau,at a locality 4769 m above the sea level (a.s.l.).The materials consist of numerous disarticulated and incomplete bones.The fish remains are assigned to the Nemacheilidae based on the fused compound centrum of the 2nd and 3rd vertebrae with developed bifurcate lateral processes of the 2nd vertebra.The fossils also include the maxilla,the dentary,the anguloarticular,the quadrate,the hyomandibular,the opercle,the basihyal,the urohyal,the anterior ceratohyal,the posterior ceratohyal,the interhyal and the supracleithrum.These bones are very similar to their counterparts in some species of a Recent nemacheilid genus,Triplophysa (Nemacheilidae,Cypriniformes),which is widely distributed on the Tibetan Plateau.The nemacheilid fossils are much more abundant than the remains of schizothoracines embedded in the same horizon at the same locality.This would imply that the number of individuals of Triplophysa was much higher than that of schizothoracines when they were alive in the area.In Recent ichthyofauna of the Tibetan Plateau,Triplophysa prevails over schizothoracines in the number of individuals in the high elevations and small water bodies.Based on the fossil dominance of Triplophysa over schizothoracines and their taphonomical conditions,it appears that the water system at the Kunlun Pass area during the Pliocene might not be extensive lakes or large rivers with broad valleys.There might have been a few mountainous,relatively torrential rivers with many small,shallow streams connecting the water systems from the north and south of the East Kunlun Mountain.The environment of the Kunlun Pass Basin area during the Pliocene must be very harsh,and the altitude of the area might already have been higher than we previously suggested.The uplift of the area must be less than 1000 m since the Pliocene.
语种	英语
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/15284
专题	中国科学院古脊椎动物与古人类研究所
作者单位	中国科学院古脊椎动物与古人类研究所
第一作者单位	中国科学院古脊椎动物与古人类研究所
推荐引用方式 GB/T 7714	Wang Ning,Chang Mee Mann. discoveryoffossilnemacheilidscypriniformesteleosteipiscesfromthetibetanplateauchina[J]. sciencechinaearthsciences,2012,55(5):714.
APA	Wang Ning,&Chang Mee Mann.(2012).discoveryoffossilnemacheilidscypriniformesteleosteipiscesfromthetibetanplateauchina.sciencechinaearthsciences,55(5),714.
MLA	Wang Ning,et al."discoveryoffossilnemacheilidscypriniformesteleosteipiscesfromthetibetanplateauchina".sciencechinaearthsciences 55.5(2012):714.