Paleogene

剑桥词典

from or referring to the period of time between about 66 and 23 million years ago, in which many insects , mammals , and birds appeared
古第三纪的（迄今6600万至2300万年前）
the Paleogene period 古第三纪
Paleogene flora and fauna 古第三纪动植物

the Paleogene

noun [ 单数名词 ]

the Paleogene period
古第三纪 返回 Paleogene