A new enantiornithine (Aves: Ornithothoraces) with completely fused premaxillae from the Early Cretaceous of China

doi:10.1080/14772019.2018.1527403

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	A new enantiornithine (Aves: Ornithothoraces) with completely fused premaxillae from the Early Cretaceous of China
	Wang, Min 1,2; Zhou, Zhonghe1,2
刊名	JOURNAL OF SYSTEMATIC PALAEONTOLOGY
	2019-08-03
卷号	17 期号:15 页码:1079-1092
关键词	birds Enantiornithes fusion M sternocoracoideus Mesozoic sternum
ISSN号	1477-2019
DOI	10.1080/14772019.2018.1527403
英文摘要	We report a new small enantiornithine, Shangyang graciles gen. et sp. nov., based on a nearly complete and articulated skeleton from the Lower Cretaceous Jiufotang Formation of Liaoning Province, north-eastern China. Shangyang has premaxillae that are completely fused rostrally as well as along the frontal processes, a previously unrecognized condition in Early Cretaceous birds. As in three other enantiornithine taxa, Shangyang preserves a pair of craniolateral processes in the sternum. Phylogenetic analysis places Shangyang in a relatively derived position within Enantiornithes, suggesting that the craniolateral processes of the sternum evolved independently among some enantiornithine lineages from the condition seen in some basal ornithuromorphs. The craniolateral processes in modern birds provide the insertions of the M. sternocoracoideus that functions in the downstroke, which can also originate from the two cranialmost sternal ribs instead when these processes are absent. The altered origin of this muscle shows that diverse pectoral musculoskeletal modifications took place early in avian history.
资助项目	National Natural Science Foundation of China[41688103] ; National Natural Science Foundation of China[41722202] ; National Natural Science Foundation of China[41502002]
WOS关键词	BIRD ; EVOLUTION ; ANATOMY ; INFORMATION ; MORPHOLOGY ; SHOULDER ; INSIGHT ; SUPPORT ; ORIGIN ; SKULL
WOS研究方向	Evolutionary Biology ; Paleontology
语种	英语
出版者	TAYLOR & FRANCIS LTD
WOS记录号	WOS:000472108800003
内容类型	期刊论文
源URL	[http://119.78.100.205/handle/311034/10025]
专题	古脊椎动物与古人类研究所_图书馆1
通讯作者	Wang, Min
作者单位	1.Chinese Acad Sci, Key Lab Vertebrate Evolut & Human Origins, Inst Vertebrate Paleontol & Paleoanthropol, Beijing 100044, Peoples R China 2.CAS Ctr Excellence Life & Paleoenvironm, Beijing 100044, Peoples R China
推荐引用方式 GB/T 7714	Wang, Min,Zhou, Zhonghe. A new enantiornithine (Aves: Ornithothoraces) with completely fused premaxillae from the Early Cretaceous of China[J]. JOURNAL OF SYSTEMATIC PALAEONTOLOGY,2019,17(15):1079-1092.
APA	Wang, Min,&Zhou, Zhonghe.(2019).A new enantiornithine (Aves: Ornithothoraces) with completely fused premaxillae from the Early Cretaceous of China.JOURNAL OF SYSTEMATIC PALAEONTOLOGY,17(15),1079-1092.
MLA	Wang, Min,et al."A new enantiornithine (Aves: Ornithothoraces) with completely fused premaxillae from the Early Cretaceous of China".JOURNAL OF SYSTEMATIC PALAEONTOLOGY 17.15(2019):1079-1092.