The oil source of oilsand in northern kashi sag came from jurassic hydrocarbon source whose reservoir - forming stage might be from miocene to pliocene 喀什凹陷北部油砂的油源来自于侏罗系烃源岩，成藏期为中新世至上新世。
The eocene occurred between 56 million and 49 million years ago . it featured the highest prolonged global temperatures of the past 65 million years 始新世是指5600万前到4900万年前。它拥有过去6500万年间持续最久的全球高温。
For decades , the prevailing hypothesis about miocene amazonia held that a shallow sea swamped the region for much of that epoch 关于中新世的亚马逊河流域，过去数十年来，一般的假设是在中新世的绝大部份时间，有一座浅海淹没了该区。
The eocene ' s oceans , according to fossil records of oxygen , were the warmest of the past 60 million years . they were also much higher than today ' s seas 化石中的氧表明，始新世的海洋是过去6000万年间最温暖的。海平面也现在高很多。
That must have been true back in the pliocene , more than two million years ago , when meat was added to the menu of our plant - chomping forebears 菜单上多了肉，对于我们那些生存于200万年前上新世、咀嚼著植物的祖先来说，也一样有风险。
With the same geological structural settings , the miocene sequence development of the shanwang , baojiahe , and qingshan basins are comparable 在相同构造背景下，山旺盆地、包家河盆地和青山盆地的中新世对应层位的层序发育特征具有可比性。
Messel pit is the richest site in the world for understanding the living environment of the eocene , between 57 million and 36 million years ago 麦塞尔化石遗址对于研究距今5 , 700万年至3 , 600万年间的始新世自然生态环境有着非常重大的意义。
Researchers in southern south america have also made convincing cases that shallow marine conditions existed in inland argentina during the miocene 南美洲南部的研究人员也提出了一些事实，让人相信在中新世时期，浅海的环境也存在于阿根廷内陆。
Paleontological studies showed that modern avian groups probably first appeared in the paleocene and experienced an explosive radiation in the early cenozoic 古生物学研究表明，现生鸟类的最早出现是在古新世，而爆发性辐射演化发生在新生代早期。
In the northwest pacific domain , the folding age is from late jurassic to middle eocene , and in the tethys domain it is between middle and late eocene 主要褶皱时代很晚，在南北太平洋大地构造域是晚侏罗世至中始新世，在特提斯大地构造域是中晚始新世之交。
