Early evolution of the biological bird: perspectives from new fossil discoveries in China

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	Early evolution of the biological bird: perspectives from new fossil discoveries in China
	O'Connor, Jingmai; Zhou, Zhonghe
刊名	JOURNAL OF ORNITHOLOGY
	2015-12-01
卷号	156 页码:S333-S342
关键词	Jehol Biota Mesozoic Birds Avian Biology Definition Of Aves
文献子类	Review
英文摘要	New discoveries of fossil birds belonging to the Jehol Biota uncovered from Lower Cretaceous lacustrine deposits in northeastern China continue to greatly enrich our understanding of the first major avian radiation. The exceptional preservation of some fossils provides a rare chance to discuss many biological issues that are usually impossible to address in paleontological studies, such as: the ossification pattern of the sternum in the extinct group Enantiornithes, which is unlike that of modern birds and all other archosaurs; the discovery of preserved crop, gizzard, and intestinal contents in several clades which suggest that a near-modern digestive tract including specialized crop morphologies evolved early during avian evolution; and the rare preservation of ovarian follicles which support hypotheses that the right ovary was lost in Aves due to the limitations of powered flight. Together, these data allow a partial reconstruction of the biology of Aves very close to its origin. While no skeletal or integumentary features are recognized to define Aves, we identify two possible soft tissue features that may biologically define Aves relative to other amniotes: the presence of a crop and the loss of the right ovary.
WOS关键词	OVARIAN-FOLLICLES FOSSILIZE ; EARLY CRETACEOUS BIRDS ; AVIAN FLIGHT ; JEHOL-BIOTA ; DINOSAUR ; AVES ; SPECIMEN ; EGGS ; ARCHAEOPTERYX ; MANIRAPTORAN
WOS研究方向	Zoology
语种	英语
WOS记录号	WOS:000367457200029
内容类型	期刊论文
源URL	[http://124.16.247.212/handle/311034/7146]
专题	古脊椎动物与古人类研究所_图书馆1 古脊椎动物与古人类研究所_古低等脊椎动物研究室
作者单位	Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Beijing 100044, Peoples R China
推荐引用方式 GB/T 7714	O'Connor, Jingmai,Zhou, Zhonghe. Early evolution of the biological bird: perspectives from new fossil discoveries in China[J]. JOURNAL OF ORNITHOLOGY,2015,156:S333-S342.
APA	O'Connor, Jingmai,&Zhou, Zhonghe.(2015).Early evolution of the biological bird: perspectives from new fossil discoveries in China.JOURNAL OF ORNITHOLOGY,156,S333-S342.
MLA	O'Connor, Jingmai,et al."Early evolution of the biological bird: perspectives from new fossil discoveries in China".JOURNAL OF ORNITHOLOGY 156(2015):S333-S342.