Fossil feathers
羽毛化石
Not just for the birds
并非鸟类独有
A trove of fossils sheds light on the evolution of feathers
珍贵羽毛化石的发现能够更好地阐释羽毛的进化过程
THE fossil record is, famously, full of holes.
众所周知,化石记录总是漏洞百出。
One such lacuna has been the absence of well-preserved feathers from the Cretaceous-theperiod between 145m and 65m years ago that ended with the mass extinction that wipedout the dinosaurs.
一个漏洞就是由于人们无法找到白垩纪时期保存完好的羽毛,因而该时期羽毛化石的记录一直处于空白状态。白垩纪是距今1.45亿年到6500万年的一段时期,末期发生了导致恐龙消失的物种大灭绝。
Now, this gap has been partly filled.
如今,这段空白得到了部分填充。
In this week s Science, a team led by Ryan McKellar from the University of Alberta report thediscovery of eleven feathers preserved in amber from the latter part of the Cretaceous,about 70m-85m years ago.
本周,瑞安?麦凯乐领导的研究小组在《科学》杂志上发表报告称,他们发现了11种白垩纪后期封存在琥珀里的羽毛。
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