Oligocene
adjective /ˈɒl.ɪ.ɡəˌsiːn/ /əˈlɪ.ɡəˌsiːn/ /ˈɑː.lɪ.ɡoʊˌsiːn/ /əˈlɪ.ɡoʊˌsiːn/
渐新世的
from or referring to the period of time between about 34 and 23 million years ago
Fossils of an especially rich array of Oligocene mammals have been unearthed here. 这里出土了特别丰富的渐新世哺乳动物的化石。
Fossilized leaves may provide information on elevation changes since the end of the Oligocene period. 树叶化石可以提供自渐新世末期以来的海拔变化信息。
- More examples
- We hunted marine fossils from the Oligocene and Eocene eras.
- Eventually, by Oligocene time, about 30 million years ago, tectonic forces reversed and extension of the crust began.
- Few fossils from the critical Oligocene epoch are known, and even fewer are described.
Oligocene
noun [ S ] /ˈɒl.ɪ.ɡəˌsiːn/ /əˈlɪ.ɡəˌsiːn/ /ˈɑː.lɪ.ɡoʊˌsiːn/ /əˈlɪ.ɡoʊˌsiːn/
the Oligocene （地质年代）渐新世
the period of time between about 34 and 23 million years ago
The Oligocene was a period of global cooling, volcanic eruptions, and seismic disturbance. 渐新世是一个全球变冷、火山喷发和地震扰动的时期。
The specimen is from a young female that lived in the early Oligocene. 该标本是一个生活在渐新世早期的年轻雌性个体。