A new enantiornitine bird with four long rectrices from the early Cretaceous of northern Hebei, China
文献类型：期刊论文
| 作者 | Zheng Xiaoting; Zhang Zihui; Hou Lianhai; zihuizhang@mail.cnu.edu.cn |
| 刊名 | ACTA GEOL SIN-ENGL
 |
| 出版日期 | 2007 |
| 卷号 | 81期号:5 |
| 关键词 | Northwestern China Partial Skeleton Gansu Province Mesozoic Bird Avian Flight Evolution Origin Skull Aves |
| ISSN号 | 1000-9515 |
| 英文摘要 | Paraprotopteryx gracilis, a new enantiornithine bird from the Early Cretaceous Yixian Formation in Fengning, northern Hebei Province is erected, based on the following characters: Y-shaped furcula with a long hypocleidum and a much narrow interclavicular angle, and the morphology of the sternum are different from other enantiornithines. Additionally, alular digit bearing the biggest manual claw extends distally to the distal end of the major metacarpal; the minor metacarpal is slender than the major metacarpal. Carpometacarpus only fused proximally; astragalus and calcaneum partially fused to one another but unfused to the tibia. This is the first record of Mesozoic birds in having four long rectrices, which may represent morphologically a secondary sexual character, an intermediate stage from elongated scale to branched feather, and possess functional advantage in supplementing the lifting surface to compensate the unskilled flight. |
| 公开日期 | 2013-11-27 |
| 源URL | [http://119.78.100.205/handle/311034/4884]  |
| 专题 | 古脊椎动物与古人类研究所_图书馆1 |
| 通讯作者 | zihuizhang@mail.cnu.edu.cn |
| 推荐引用方式 GB/T 7714 | Zheng Xiaoting,Zhang Zihui,Hou Lianhai,et al. A new enantiornitine bird with four long rectrices from the early Cretaceous of northern Hebei, China[J]. ACTA GEOL SIN-ENGL,2007,81(5). |
| APA | Zheng Xiaoting,Zhang Zihui,Hou Lianhai,&zihuizhang@mail.cnu.edu.cn.(2007).A new enantiornitine bird with four long rectrices from the early Cretaceous of northern Hebei, China.ACTA GEOL SIN-ENGL,81(5). |
| MLA | Zheng Xiaoting,et al."A new enantiornitine bird with four long rectrices from the early Cretaceous of northern Hebei, China".ACTA GEOL SIN-ENGL 81.5(2007). |
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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