The evolution of the modern avian digestive system: insights from paravian fossils from the Yanliao and Jehol biotas

doi:10.1111/pala.12453

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	The evolution of the modern avian digestive system: insights from paravian fossils from the Yanliao and Jehol biotas
	O'Connor, Jingmai K.1,2; Zhou, Zhonghe1,2
	2020
发表期刊	PALAEONTOLOGY
ISSN	0031-0239
卷号	63 期号:1 页码:13-27
摘要	The avian digestive system, like other aspects of avian biology, is highly modified relative to other reptiles. Together these modifications have imparted the great success of Neornithes, the most diverse clade of amniotes alive today. It is important to understand when and how aspects of the modern avian digestive system evolved among neornithine ancestors in order to elucidate the evolutionary success of this important clade and to understand the biology of stem birds and their closest dinosaurian relatives: Mesozoic Paraves. Although direct preservation of the soft tissue of the digestive system has not yet been reported, ingested remains and their anatomical location preserved in articulated fossils hint at the structure of the digestive system and its abilities. Almost all data concerning direct evidence of diet in Paraves comes from either the Upper Jurassic Yanliao Biota or the Lower Cretaceous Jehol Biota, both of which are known from deposits in north-eastern China. Here, the sum of the data gleaned from the thousands of exceptionally well-preserved fossils of paravians is interpreted with regards to the structure and evolution of the highly modified avian digestive system and feeding apparatus. This information suggests intrinsic differences between closely related stem lineages implying either strong homoplasy or that diet in each lineage of non-ornithuromorph birds was highly specialized. Regardless, modern digestive capabilities appear to be limited to the Ornithuromorpha, although the complete set of derived feeding related characters is restricted to the Neornithes.
关键词	Mesozoic Paraves stem Aves Jehol Biota direct evidence of diet stomach contents avian digestive system
DOI	10.1111/pala.12453
关键词[WOS]	THEROPOD DINOSAUR ; AVES ORNITHOTHORACES ; ORNITHURINE BIRD ; YIXIAN FORMATION ; ORNITHUROMORPH ; CHINA ; GASTROLITHS ; DIET ; VERTEBRATES ; LINEAGE
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[41688103] ; National Natural Science Foundation of China[41688103] ; National Natural Science Foundation of China[41688103] ; National Natural Science Foundation of China[41688103]
WOS研究方向	Paleontology
WOS类目	Paleontology
WOS记录号	WOS:000494528100001
出版者	WILEY
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/18007
专题	中国科学院古脊椎动物与古人类研究所
通讯作者	O'Connor, Jingmai K.
作者单位	1.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut Human Origins, Beijing 10010, Peoples R China 2.CAS Ctr Excellence Life & Paleoenvironm, Beijing 10010, Peoples R China
推荐引用方式 GB/T 7714	O'Connor, Jingmai K.,Zhou, Zhonghe. The evolution of the modern avian digestive system: insights from paravian fossils from the Yanliao and Jehol biotas[J]. PALAEONTOLOGY,2020,63(1):13-27.
APA	O'Connor, Jingmai K.,&Zhou, Zhonghe.(2020).The evolution of the modern avian digestive system: insights from paravian fossils from the Yanliao and Jehol biotas.PALAEONTOLOGY,63(1),13-27.
MLA	O'Connor, Jingmai K.,et al."The evolution of the modern avian digestive system: insights from paravian fossils from the Yanliao and Jehol biotas".PALAEONTOLOGY 63.1(2020):13-27.

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