Fossil evidence of avian crops from the Early Cretaceous of China

IVPP-IR > 中科院古脊椎所（2000年以后）

	Fossil evidence of avian crops from the Early Cretaceous of China
	Zheng, Xiaoting; Martin, Larry D.; Zhou, Zhonghe(周忠和); Burnham, David A.; Zhang, Fucheng(张福成); Miao, Desui; zhouzhonghe@ivpp.ac.cn
	2011
发表期刊	P NATL ACAD SCI USA
ISSN	0027-8424
卷号	108 期号:38 页码:15904—15907
摘要	The crop is characteristic of seed-eating birds today, yet little is known about its early history despite remarkable discoveries of many Mesozoic seed-eating birds in the past decade. Here we report the discovery of some early fossil evidence for the presence of a crop in birds. Two Early Cretaceous birds, the basal ornithurine Hongshanornis and a basal avian Sapeornis, demonstrate that an essentially modern avian digestive system formed early in avian evolution. The discovery of a crop in two phylogenetically remote lineages of Early Cretaceous birds and its absence in most intervening forms indicates that it was independently acquired as a specialized seed-eating adaptation. Finally, the reduction or loss of teeth in the forms showing seed-filled crops suggests that granivory was possibly one of the factors that resulted in the reduction of teeth in early birds.
关键词	Ornithurine Bird Theropod Aves
URL	查看原文
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/4381
专题	中科院古脊椎所（2000年以后）
通讯作者	zhouzhonghe@ivpp.ac.cn
推荐引用方式 GB/T 7714	Zheng, Xiaoting,Martin, Larry D.,Zhou, Zhonghe,et al. Fossil evidence of avian crops from the Early Cretaceous of China[J]. P NATL ACAD SCI USA,2011,108(38):15904—15907.
APA	Zheng, Xiaoting.,Martin, Larry D..,Zhou, Zhonghe.,Burnham, David A..,Zhang, Fucheng.,...&zhouzhonghe@ivpp.ac.cn.(2011).Fossil evidence of avian crops from the Early Cretaceous of China.P NATL ACAD SCI USA,108(38),15904—15907.
MLA	Zheng, Xiaoting,et al."Fossil evidence of avian crops from the Early Cretaceous of China".P NATL ACAD SCI USA 108.38(2011):15904—15907.

条目包含的文件		下载所有文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
Fossil evidence of a（833KB）			开放获取	--	浏览下载