A second Cretaceous ornithuromorph bird from the Changma Basin, Gansu Province, northwestern China

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	A second Cretaceous ornithuromorph bird from the Changma Basin, Gansu Province, northwestern China
	You, HL (You, Hai-Lu); Atterholt, J (Atterholt, Jessie); O'Connor, JK (O'Connor, Jingmai K.); Harris, JD (Harris, Jerald D.); Lamanna, MC (Lamanna, Matthew C.); Li, DQ (Li, Da-Qing)
刊名	ACTA PALAEONTOLOGICA POLONICA
	2010
卷号	55 期号:4 页码:617-625
关键词	Aves Ornithuromorpha Aptian Early Cretaceous China
ISSN号	0567-7920
英文摘要	Finely-bedded lacustrine deposits of the Aptian (Lower Cretaceous) Xiagou Formation exposed in the Changma Basin of Gansu Province, northwestern China, have yielded numerous fossil vertebrate remains, including approximately 100 avian specimens. Though the majority of these birds appear referable to the ornithuromorph Gansus yumenensis, a number of enantiornithine fossils have also been recovered. Here we report on a specimen consisting of a complete, three-dimensionally preserved sternum, furcula, and sternal ribs that represents a second ornithuromorph taxon from the Xiagou Formation at Changma. The fossil exhibits morphologies that distinguish it from all previously-known Xiagou birds and demonstrate that it represents a derived non-ornithurine member of Ornithuromorpha. Though it is morphologically distinct from the equivalent elements of all other described ornithuromorphs, the material is too incomplete to justify the erection of a new taxon. Nonetheless, it increases the taxonomic diversity of the Xiagou avifauna, thereby expanding our knowledge of Early Cretaceous avian diversity and evolution.
学科主题	古生物学
WOS关键词	ENANTIORNITHINE BIRD ; XIAGOU FORMATION ; AVIAN FLIGHT ; ORNITHURINE BIRD ; EARLY EVOLUTION ; FOSSIL BIRD ; MORPHOLOGY ; AVES ; RADIATION
WOS研究方向	Paleontology
语种	英语
出版者	INST PALEOBIOLOGII PAN
WOS记录号	WOS:000286085100005
内容类型	期刊论文
源URL	[http://119.78.100.197/handle/2HKVOGP0/39198]
专题	中国地质调查局
作者单位	Gansu Geol Museum, Lanzhou 730010, Gansu, Peoples R China
推荐引用方式 GB/T 7714	You, HL ,Atterholt, J ,O'Connor, JK ,et al. A second Cretaceous ornithuromorph bird from the Changma Basin, Gansu Province, northwestern China[J]. ACTA PALAEONTOLOGICA POLONICA,2010,55(4):617-625.
APA	You, HL ,Atterholt, J ,O'Connor, JK ,Harris, JD ,Lamanna, MC ,&Li, DQ .(2010).A second Cretaceous ornithuromorph bird from the Changma Basin, Gansu Province, northwestern China.ACTA PALAEONTOLOGICA POLONICA,55(4),617-625.
MLA	You, HL ,et al."A second Cretaceous ornithuromorph bird from the Changma Basin, Gansu Province, northwestern China".ACTA PALAEONTOLOGICA POLONICA 55.4(2010):617-625.