Locomotory abilities and habitat of the Cretaceous bird Gansus yumenensis inferred from limb length proportions

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	Locomotory abilities and habitat of the Cretaceous bird Gansus yumenensis inferred from limb length proportions
	Nudds, R. L.1; Atterholt, J.2; Wang, X.3; You, H. -L.4; Dyke, G. J.5,6
刊名	JOURNAL OF EVOLUTIONARY BIOLOGY
	2013
卷号	26 期号:1 页码:150-154
关键词	Diving Flight Fossil Locomotion Morphology Ternary Diagram
文献子类	Article
英文摘要	The relative length proportions of the three bony elements of the pelvic (femur, tibiotarsus and tarsometatarsus) and pectoral (humerus, ulna and manus) limbs of the early Cretaceous bird Gansus yumenensis, a well-represented basal ornithuromorph from China, are investigated and compared to those of extant taxa. Ternary plots show that the pectoral limb length proportions of Gansus are most similar to Apodiformes (swifts and hummingbirds), which plot away from all other extant birds. In contrast, the pelvic limb length proportions of Gansus fall within the extant bird cluster and show similarities with the neornithine families Podicipedidae (grebes), Diomedeidae (albatross) and Phalacrocoracidae (cormorants). Although it does have some of the pelvic limb features of grebes and cormorants, the femur of Gansus is more gracile and is thus more consistent with an albatross-like shallow-diving mode of life than a strong foot-propelled diving movement pattern. The position of Gansus in pectoral limb ternary morphospace is largely due to its elongated manus. In contrast to apodiformes, where the humerus and ulna are short and robust, an adaptation, which provides a stiff wing for their demanding fast agile and hovering flight (respectively), the wing-bones of Gansus are slender, indicating a less vigorous flapping flight style. The suite of characters exhibited by Gansus mean it is difficult to completely interpret its likely ecology. Nevertheless, our analyses suggest that it is probable that this bird was both volant and capable of diving to some degree using either foot-propelled or, perhaps, both its wings and its feet for underwater locomotion.
WOS关键词	EVOLUTIONARY RADIATION ; FOSSIL RECORD ; NEORNITHES ; DIVERSITY ; BONES ; AVES
WOS研究方向	Environmental Sciences & Ecology ; Evolutionary Biology ; Genetics & Heredity
语种	英语
WOS记录号	WOS:000312543700014
内容类型	期刊论文
源URL	[http://124.16.247.212/handle/311034/7319]
专题	古脊椎动物与古人类研究所_图书馆1
作者单位	1.Univ Manchester, Fac Life Sci, Manchester M13 9PT, Lancs, England 2.Univ Penn, Dept Earth & Environm Sci, Philadelphia, PA 19104 USA 3.Univ Coll Dublin, Sch Biol & Environm Sci, Dublin 2, Ireland 4.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Evolutionary Systemat Vertebrates, Beijing, Peoples R China 5.Univ Southampton, Natl Oceanog Ctr, Southampton, Hants, England 6.Univ Southampton, Inst Life Sci, Southampton, Hants, England
推荐引用方式 GB/T 7714	Nudds, R. L.,Atterholt, J.,Wang, X.,et al. Locomotory abilities and habitat of the Cretaceous bird Gansus yumenensis inferred from limb length proportions[J]. JOURNAL OF EVOLUTIONARY BIOLOGY,2013,26(1):150-154.
APA	Nudds, R. L.,Atterholt, J.,Wang, X.,You, H. -L.,&Dyke, G. J..(2013).Locomotory abilities and habitat of the Cretaceous bird Gansus yumenensis inferred from limb length proportions.JOURNAL OF EVOLUTIONARY BIOLOGY,26(1),150-154.
MLA	Nudds, R. L.,et al."Locomotory abilities and habitat of the Cretaceous bird Gansus yumenensis inferred from limb length proportions".JOURNAL OF EVOLUTIONARY BIOLOGY 26.1(2013):150-154.