200多万年前的马蹄蟹化石，与今天的马蹄蟹几乎完全相同：它们是三叶虫最近的亲戚。
Horseshoe crab fossils over 200 million years old are almost identical to contemporary animals: They are the closest living relatives of the trilobites.
大部分在古生代岩层中发现的化石都是没有脊骨的无脊椎动物，例如珊瑚、软体动物和三叶虫。
Most of the fossils seen in Paleozoic rocks are invertebrate animals lacking backbones, such as corals, mollusks and trilobites.
冰河时期海洋中多空虫贝壳化石中积聚的较重的氧同位素比较多，而另一种轻的氧同位素则更多地积聚在古代冰层和积雪中。
During glacial periods, the forams' shells contain more of the heavier of two oxygen isotopes, as the lighter one is preferentially accumulated in snow and ice rather than the ocean.
最近，我有机会试驾了最新款的2012年版甲壳虫，它让我回想了过去75年来，这款拥有汽车史诗地位的“汽车活化石”的前世今生。
Recently, I got a chance to drive the latest edition of this automotive epic, the 2012 Beetle, and it made me think about all its incarnations over the last three quarters of a century.
芦管石表面极易遗留近代潮虫遗体化石，所以吸水性较强，在假山中，常常在其表面栽种绿色植物。
Flower stone surface legacy modern tide worm fossil remains extremely easily, so the strong water imbibition, in the rockery, often grow green plants on its surface.
海盆区粘土沉积物中的放射虫化石丰度高且分异度高。
The abundance and diversity of radiolaria fossils are high in the clay of basin.
因而前寒武纪化石的缺失和寒武纪三叶虫等突发式出现，好象一把双刃剑，对达尔文演化学说的塔基构成了威胁。
Therefore the deficiency of pre-Cambrian fossil and the sudden emergence of Cambrian trilobite are like a double edged sword posing threat for the very foundation of Darwin evolutionism.
对本剖面所获得的介形虫化石进行了系统的研究。
Make a systemic study on the ostracode fossils which collected from the section.
摘要柴达木盆地西部第三系的碳酸盐岩层中发现有藻类、介形虫、有孔虫、腹足类、多毛类等化石。
The fossils of algae, ostracoda, foraminifera, gastropod and polychaeta were found in the tertiary carbonate beds in the west of chaidamu basin.
首次在该区发现放射虫化石和海相玄武岩地层。为探讨该区泥盆系的时代以及大地构造环境提供。
The radiolaria fossils and submarine basalts which are first discovered afford us new material to discuss about the stratigraphical time and tectonic background of this area in Devonian period.
摘要柴达木盆地西部第三系的碳酸盐岩层中发现有藻类、介形虫、有孔虫、腹足类、多毛类等化石。
The fossils of algae ostracoda foraminifer a gastropod and polychaeta were found in the tertiary carbonate beds in the west of chaidamu basin.
陆坡下部区的火山碎屑及浊流沉积物中放射虫化石亦不丰富。
In the low area of continental slope, radiolaria fossils are poor in the volcanic cinders and turbidite.
在同一地区还发现了另外两块这些三叶虫化石。
Two others of these trilobite fossils have been found in the same area.
讨论了为获得放射虫化石的高质量的二次电子图像所采用的试样制备方法。
In this paper the sample preparation techniques of radiolarite were discussed in order to get high quality secondary electron images in SEM.
加拿大一研究人员发现被认为是七千万年前北美最小的恐龙化石，它只有小鸡这么大，是种非常罕见的食虫性恐龙。
A Canadian researcher has discovered what is believed to be North America's smallest dinosaur, a 70 million-year-old chicken-sized beast that was also unusual for its diet of insects.
加拿大一研究人员发现被认为是七千万年前北美最小的恐龙化石，它只有小鸡这么大，是种非常罕见的食虫性恐龙。
A Canadian researcher has discovered what is believed to be North America's smallest dinosaur, a 70 million-year-old chicken-sized beast that was also unusual for its diet of insects.
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