amammalianfossilfromthedingqingformationinthelunpolabasinnortherntibetanditsrelevancetoageandpaleoaltimetry

	amammalianfossilfromthedingqingformationinthelunpolabasinnortherntibetanditsrelevancetoageandpaleoaltimetry
	Deng Tao1 ; Wang Shiqi1 ; Xie Guangpu 2; Li Qiang1 ; Hou Sukuan1 ; Sun Boyang 1
刊名	chinesesciencebulletin
	2012
卷号	57 期号:2-3 页码:261
ISSN号	1001-6538
英文摘要	The distal extremity of a rhinocerotid humerus from the upper part of the Dingqing Formation at the Lunbori locality in Baingoin County,northern Tibet,is the first mammalian fossil found in Cenozoic deposits of the Lunpola Basin.The medial condyle of the distal trochlea of the humerus specimen from Lunbori gradually contracts from medially to laterally.The margin of the medial surface of the medial condyle is not prominent,the well-developed medial epicondyle strongly extends posteriorly,and is divided from the articular facet of the medial condyle by a groove;all of which are characteristic for the Rhinocerotidae.The medial condyle is wide at the bottom and narrow at the top.The medial collateral ligament fossa is relatively shallow,and the medial collateral ligament tubercle is very weak.The medial part of the upper margin of the medial condyle smoothly connects to the bony surface above,but there is no clear boundary between them.All of these characteristics are identical with those of Plesiaceratherium.These comparisons imply that the Lunbori specimen is closest to Plesiaceratherium gracile in the Shanwang Fauna from Linqu,Shandong Province,in size and morphology.Thus,its age is suggested to be the late Early Miocene(Shanwangian Age),about 18-16 Ma.Discovery of the rhinocerotid fossil suggests that the upper part of the Dingqing Formation deposited in the Neogene.While adjusting to paleo-temperatures of the Early Miocene,a paleo-ecosystem reconstruction indicates that the paleo-elevation was close to 3000 m in the Lunpola Basin during this time.
语种	英语
内容类型	期刊论文
源URL	[http://119.78.100.205/handle/311034/10786]
专题	中国科学院古脊椎动物与古人类研究所
作者单位	1.中国科学院古脊椎动物与古人类研究所 2.Gansu Provincial Museum
推荐引用方式 GB/T 7714	Deng Tao,Wang Shiqi,Xie Guangpu,et al. amammalianfossilfromthedingqingformationinthelunpolabasinnortherntibetanditsrelevancetoageandpaleoaltimetry[J]. chinesesciencebulletin,2012,57(2-3):261.
APA	Deng Tao,Wang Shiqi,Xie Guangpu,Li Qiang,Hou Sukuan,&Sun Boyang.(2012).amammalianfossilfromthedingqingformationinthelunpolabasinnortherntibetanditsrelevancetoageandpaleoaltimetry.chinesesciencebulletin,57(2-3),261.
MLA	Deng Tao,et al."amammalianfossilfromthedingqingformationinthelunpolabasinnortherntibetanditsrelevancetoageandpaleoaltimetry".chinesesciencebulletin 57.2-3(2012):261.