1.【地】始新世的,始新统的
1.【地】始新世;始新统;始新世岩石
1.the epoch of geological time, 55 million to 38 million years ago, during which the ancestors of many modern animals appeared
1.The Chesapeake Bay region of southeastern Virginia is the site of an asteroid or comet impact that occurred during the Eocene.
维吉尼亚州东南部Chesapeake海湾地区是曾经在始新世被一颗小行星或彗星撞击的地点。
2.Eocene seas were home to an unusual and gigantic form of early whale called Basilosaurus.
始新世的海洋中游荡着一种与众不同，体型庞大的早期鲸鱼--龙王鲸。
3.The other was a feathered skull from the Eocene (55m years ago) that had been unearthed in Denmark.
另一个是在丹麦发掘到的始新世（5500万年前）的一根羽骨。
4.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.
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。
5.As with many mammal groups, even-toed ungulates first appeared during the Early Eocene (about 54 million years ago).
与许多哺乳类族群一样，偶蹄目最初出现在早古新世（约5400万年前）。
6.The delta proper began developing in the Eocene , accumulating sediments that now are over 10 kilometers thick.
三角洲的形成开始于始新世，现在沉积物积聚了10千米的厚度。
7.The Paleogene series developed Eocene series and Oilgocene series in this basin.
该盆地古近系发育有始新统、渐新统两套地层层序。
8.He hadn't really wanted to spend a cold, miserable afternoon discussing yeast from the Eocene.
他并不是真的想消磨一个寒冷、悲惨的下午来探讨来自创新世的酵母。
9.Oligocene A geological epoch in the Tertiary, between Eocene and Miocene, lasting from about 38 to 25 million years ago.
渐新世纪第三纪始新世与中新世之间的地质纪元，大约从三千八百万年持续到二千五百万年前的一段时间。
10.One such episode in Earth's history occurred 56. 3 million years ago and iscalled the Palaeocene-Eocene Thermal Maximum (PETM).
地球史上这样的经历发生在5630万年前，是所谓的古新世（PETM）时期。