Fossil evidence of avian crops from the Early Cretaceous of China
文献类型：期刊论文
| 作者 | Zheng, Xiaoting; Martin, Larry D.; Zhou, Zhonghe(周忠和); Burnham, David A.; Zhang, Fucheng(张福成); Miao, Desui; zhouzhonghe@ivpp.ac.cn |
| 刊名 | P NATL ACAD SCI USA
 |
| 出版日期 | 2011 |
| 卷号 | 108期号:38页码:15904—15907 |
| 关键词 | Ornithurine Bird Theropod Aves |
| ISSN号 | 0027-8424 |
| 英文摘要 | 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. |
| URL标识 | 查看原文 |
| 公开日期 | 2013-11-27 |
| 源URL | [http://119.78.100.205/handle/311034/4382]  |
| 专题 | 古脊椎动物与古人类研究所_图书馆1 |
| 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. |
入库方式： OAI收割
来源：古脊椎动物与古人类研究所
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