Radiocarbon dating of fossils taken from caves on islands along southeastern Alaska's coast suggest that at least a portion of the area was remaining ice-free during the last ice age.

从阿拉斯加东南海岸岛屿的洞穴中提取的化石的放射性碳年代测定法表明，在最后一个冰河时代，该地区至少有一部分保持无冰状态。

youdao

He starts at their beginning with a weighty introduction that looks at fossils dating back to the dinosaurs, the structure of feathers and the evolution of birds.

通过大量介绍恐龙时代的化石，他开始描述最初的羽毛结构和鸟类进化的开端。

youdao

The three-hour guided visits are a walk through time, along a well-designed nature trail past a wealth of exposed fossils dating as far back as the Tertiary, some 40 million years ago.

这三个小时的参观是一次时间漫游，沿精心设计的自然路径以此经过大量的可以追溯到大约4千万年前的第三纪的暴露的化石。

youdao

For the past century in Ethiopia, Kenya, Tanzania and South Africa, ancient fossils dating back millions of years continue to emerge suggesting a common ancestor for humans.

CNN: African roots of the human family tree

Evidence of the first dispersal comes from the site of Dmanisi in Georgia, where numerous hominid fossils dating to 1.75 million years ago have been unearthed.

BBC: 'Peking Man' older than thought