A new ichnotaxon of fossil bird track from the Early Cretaceous;Tianjialou Formation (Barremian-Albian), Shandong Province, China

doi:10.1360/982004-823

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	A new ichnotaxon of fossil bird track from the Early Cretaceous;Tianjialou Formation (Barremian-Albian), Shandong Province, China
	Li, RH 4; Lockley, MG ; Liu, MW
刊名	CHINESE SCIENCE BULLETIN
	2005
卷号	50 期号:11 页码:1149-1154
关键词	tetradactyl bird tracks New Ichnogenus Shandongornipes Early Cretaceous Tianjialou Formation Shandong Province China
ISSN号	1001-6538
DOI	10.1360/982004-823
英文摘要	A single set of 5 bird tracks was discovered in the Tianjialou Formation (Barremian-Albian) of Junan County, Shandong Province, China. After careful study we infer that it is a new type of bird tracks, and a new ichnogenus was erected and the name Shandongornipes was given. The characteristics of the new bird track are as follows: Moderately large tetradactyl footprints with well-developed hallux impression. Track width (about 5.8 cm) almost equal to track length (excluding hallux); total length of track (including hallux) 8.7 cm. The digit impressions are slender, with distal ends showing long sharp claw marks. Hallux posteriorly-directed, and hallux impressions well-developed. Digits II, III and IV point anteriorly, exhibiting mesaxonic asymmetry: divarication angle between II and III much larger than that of III and IV, the former ranging from 91 degrees to 118 degrees, and the latter less than 30 degrees. Divarication between digits II and IV ranging from 128 degrees to 142 degrees. Without web structures. Digital pads recognizable, usually at least three in digits III and IV, but sometimes only two due to preservation. The trackway shows slight positive (inward) rotation of feet. The bird tracks occur in association with abundant dinosaur tracks, and are believed to have formed in flood plain environments.
学科主题	古生物学
WOS关键词	RECORD
WOS研究方向	Science & Technology - Other Topics
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000231712400016
内容类型	期刊论文
源URL	[http://119.78.100.197/handle/2HKVOGP0/37887]
专题	中国地质调查局青岛海洋地质研究所
作者单位	1.China Geol Survey, Qingdao Inst Marine Geol, Qingdao 266071, Peoples R China. 2.Univ Colorado, Denver, CO 80202 USA. 3.Fourth Geol & Mineral Resources Survey Shandong, Weifang 261021, Peoples R China. 4.中国地质调查局青岛海洋地质研究所
推荐引用方式 GB/T 7714	Li, RH,Lockley, MG,Liu, MW. A new ichnotaxon of fossil bird track from the Early Cretaceous;Tianjialou Formation (Barremian-Albian), Shandong Province, China[J]. CHINESE SCIENCE BULLETIN,2005,50(11):1149-1154.
APA	Li, RH,Lockley, MG,&Liu, MW.(2005).A new ichnotaxon of fossil bird track from the Early Cretaceous;Tianjialou Formation (Barremian-Albian), Shandong Province, China.CHINESE SCIENCE BULLETIN,50(11),1149-1154.
MLA	Li, RH,et al."A new ichnotaxon of fossil bird track from the Early Cretaceous;Tianjialou Formation (Barremian-Albian), Shandong Province, China".CHINESE SCIENCE BULLETIN 50.11(2005):1149-1154.