| 词汇 | oligocene |
| 释义 | Oligocene adjective uk /ˈɒl.ɪ.ɡəˌsiːn//əˈlɪ.ɡəˌsiːn/ us /ˈɑː.lɪ.ɡoʊˌsiːn//əˈlɪ.ɡoʊˌsiːn/ from or referring to the period of time between about 34 and 23 million years ago: 渐新世的 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。 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. Geology - general words aeolian Anthropocene anticline apophysis auriferous biozone carboniferous continental plate geologically geomorphic gully erosion henge Holocene petrographic petrographically petrography petrological petrologically Precambrian rockfall You can also find related words, phrases, and synonyms in the topics: Prehistory Specific periods of time Oligocene noun[ S ] uk /ˈɒl.ɪ.ɡəˌsiːn//əˈlɪ.ɡəˌsiːn/ us /ˈɑː.lɪ.ɡoʊˌsiːn//əˈlɪ.ɡoʊˌsiːn/ the Oligocene the period of time between about 34 and 23 million years ago: 渐新世（距今约3400至2300万年间） 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。 It is divided into five epochs: the Palaeocene, Eocene, Oligocene, Miocene, and Pliocene. The hominoid primates appear to have emerged during the Oligocene at least 25 million years ago. These aquatic mammals were apparently more abundant from the Oligocene to the Pliocene than they are now. Geology - general words aeolian Anthropocene anticline apophysis auriferous biozone carboniferous continental plate geologically geomorphic gully erosion henge Holocene petrographic petrographically petrography petrological petrologically Precambrian rockfall You can also find related words, phrases, and synonyms in the topics: Prehistory Specific periods of time |
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