这些沉积物是在始新世时期沉积下来的，当时南极沿岸的水温比今天高10度左右。
The sediment was laid down during the Eocene period, a time when the waters off Antarctica were about 10 degrees warmer than they are today.
金格里奇相信第一批鲸和沼泽地碳兽十分相似，一种生活在始新世时期沼泽低地里，形似河马的小型食草动物。
Gingerich believes the first cetaceans probably resembled anthracotheres, svelte hippo-like browsers that inhabited swampy lowlands in Eocene times.
尽管白垩纪时小行星撞击地球后为哺乳动物搭起了活动的舞台，但是哺乳动物真正大行其道是100万年以后的事情了，也就是在始新世时期。
Though the Cretaceous asteroid cleared the stage, mammals did not really get going until 10m years later, in the Eocene epoch.
人们原先不知道在这个被称为“始新世”的时期，非洲有类人猿的存在。
Few or any anthropoids are known to have existed in Africa during this period, known as the Eocene epoch.
当海洋学家研究这些样本时，他们可以看到在古新世-始新世极热时期碳循环的改变。
When oceanographers study these samples, they can see changes in the carbon cycle during the PETM.
由于种种原因，在古新世-始新世极热时期地球大气中碳上升的量。
During the PETM, for reasons that are still unknown, the amount of carbon in Earth's atmosphere rose rapidly.
始新世时代为古新代的后一时期，它存在于距今五千六百万年以前；据称，就是在这个时期哺乳动物的祖先的进化该是趋于多样化的。
It was during the Eocene, which began 56m years ago, following the Palaeocene, that the ancestors of mammals around today are supposed to have diversified.
Dickens说，结论是：导致古新世-始新世极热时期气候变暖的主要原因不是二氧化碳，而是另有其物。
The conclusion, Dickens said, is that something other than carbon dioxide caused much of the heating during the PETM.
新生代构造现象既是中生代时期构造作用的延续，也是始新世以来复杂应力环境作用的结果。
The tectonic phenomena happened in the Cenozoic are caused by both of the continuity of the Mesozoic tectonic processes and the complexity of Cenozoic stress field.
运动学模式发生巨大转变的时期，大致在始新世与渐新世之间，这与全球运动学和动力学发生的重大改组的时间相一致。
The massive changes of the kinematic pattern occurred roughly between the Eocene and Oligocene epochs, which is in accordance with the great reorganization in global kinematics and dynamics.
柯拉诺及同事认为，在始新世极热时期(PETM)与气温同时上升的二氧化碳含量使得植物树叶含有的营养成分下降，昆虫需要食用更多的树叶才能饱腹。
Currano and her colleagues think these more voracious insect appetites were a result of a concurrent rise in carbon dioxide levels during the PETM that would have made plant leaves less nutritious.
会聚构造型式以对冲式及叠覆式为主要类型，形成时期在晚始新世—渐新世。
The main patterns of the convergent structure are the ramp type and the superimposed one. And their forming periods are Late Eocene Oligoecne.
会聚构造型式以对冲式及叠覆式为主要类型，形成时期在晚始新世—渐新世。
The main patterns of the convergent structure are the ramp type and the superimposed one. And their forming periods are Late Eocene Oligoecne.
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