用户名: 密码: 验证码:
Extreme Ontogenetic Changes in a Ceratosaurian Theropod
详细信息    查看全文
文摘
Wang et al. report 78 ontogenetically variable features of the theropod Limusaurus Limusaurus is the only known reptile to lose its teeth and form a beak after birth The available data are important for understanding the evolution of the avian beak The ontogenetically variable features have little effect on its phylogenetic position

© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号

地址:北京市海淀区学院路29号 邮编:100083

电话:办公室:(+86 10)66554848;文献借阅、咨询服务、科技查新:66554700