IVPP-IR  > 中科院古脊椎所(2000年以后)
Body size evolution in Mesozoic birds
Hone, D. W. E.; Dyke, G. J.; Haden, M.; Benton, M. J.; dhone@ivpp.ac.cn
2008
发表期刊J EVOLUTION BIOL
ISSN1010-061X
卷号21期号:2页码:618-624
摘要The tendency for the mean body size of taxa within a clade to increase through evolution (Cope's Rule) has been demonstrated in a number of terrestrial vertebrate groups. However, because avian body size is strongly constrained by flight, any increase in size during the evolution of this lineage should be limited - there is a maximum size that can be attained by a bird for it to be able to get off the ground. Contrary to previous interpretations of early avian evolution, we demonstrate an overall increase in body size across Jurassic and Cretaceous flying birds: taxon body size increases from the earliest Jurassic through to the end of the Cretaceous, across a time span of 70 Myr. Although evidence is limited that this change is directional, it is certainly nonrandom. Relative size increase occurred presumably as the result of an increase in variance as the avian clade diversified after the origin of flight: a progression towards larger body size is seen clearly within the clades Pygostylia and Ornithothoraces. In contrast, a decrease in body size characterizes the most crownward lineage Ornithuromorpha, the clade that includes all extant taxa, and potentially may explain the survival of these birds across the Cretaceous-Palaeogene boundary. As in all other dinosaurs, counter selection for small size is seen in some clades, whereas body size is increasing overall.
关键词Copes Rule Mass Mammals Radiation Trends Diversification Explanation Pterosaurs Carnivores Allometry
URL查看原文
文献类型期刊论文
条目标识符http://119.78.100.205/handle/311034/4851
专题中科院古脊椎所(2000年以后)
通讯作者dhone@ivpp.ac.cn
推荐引用方式
GB/T 7714
Hone, D. W. E.,Dyke, G. J.,Haden, M.,et al. Body size evolution in Mesozoic birds[J]. J EVOLUTION BIOL,2008,21(2):618-624.
APA Hone, D. W. E.,Dyke, G. J.,Haden, M.,Benton, M. J.,&dhone@ivpp.ac.cn.(2008).Body size evolution in Mesozoic birds.J EVOLUTION BIOL,21(2),618-624.
MLA Hone, D. W. E.,et al."Body size evolution in Mesozoic birds".J EVOLUTION BIOL 21.2(2008):618-624.
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
Body size evolution (313KB)期刊论文作者接受稿开放获取CC BY-NC-SA浏览 下载
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Hone, D. W. E.]的文章
[Dyke, G. J.]的文章
[Haden, M.]的文章
百度学术
百度学术中相似的文章
[Hone, D. W. E.]的文章
[Dyke, G. J.]的文章
[Haden, M.]的文章
必应学术
必应学术中相似的文章
[Hone, D. W. E.]的文章
[Dyke, G. J.]的文章
[Haden, M.]的文章
相关权益政策
中科院和国家自然科学...
收藏/分享
文件名: Body size evolution in Mesozoic birds.pdf
格式: Adobe PDF
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。