Palaeogene

劍橋詞典

from or referring to the period of time between about 66 and 23 million years ago, in which many insects , mammals , and birds appeared
古第三紀(jì)的（迄今6600萬(wàn)至2300萬(wàn)年前）
the Palaeogene period 古第三紀(jì)
Palaeogene flora and fauna 古第三紀(jì)動(dòng)植物

the Palaeogene

noun [ 單數(shù)名詞 ]

the Palaeogene period
古第三紀(jì) 返回 Palaeogene