化石的

Different secondary layers of fossil brachiopod shells have different preservation and the way by which the shells' primary isotope ratios be influenced by diagenesis: postdepositional alternation of δ〓O、δ〓C has no effect on the low-Mg calcite minerals of the shells, while it alters the whole shell's isotopic compositions by microcrack fillings, even with the well preserved shells.

1成岩后生作用对腕足化石壳体不同结构单元的改造方式及改造程度不同：成岩后生作用对保存较好的腕足化石壳体的改造是以微裂隙充填方式进行，而对低镁方解石本身并没有影响。

We are burning a "fossil", and we can refer in the same way to all natural organic materials, ranging from coal to oil and gas, including oil shales, tar sands, and other geological formation, as fossil fuels.

我们是在燃烧&化石&。我们可以用同样的方式将所有的自然有机物质称作化石燃料，它们包括煤、石油、天然气、焦油砂及其它地质有机建造。

For years, scientists have puzzled over the fact that the fossil record features two types of pterosaurs but no intermediates.

多年以来，古生物学家已经陆续发现了两种翼龙的化石记录，但却一直苦於没有找到任何中间过渡类型的化石记录。

A Mioceneflora from the Xiananshan Formation of eastern Zhejiang Province, containing veryabundant compressive plant fossils, is a significant key for plant anatomy and organicgeochemical research.

浙江东部上中新统下南山组含有丰富的压型植物化石，为分析化石植物的解剖学以及有机地球化学特征提供了条件。

Fossilization of soft-bodied animals is less likely than fossilization of hard-bodied animals, but it does occur.

软体动物的化石比硬体动物化石少见得多，但是也是可能发生的。

Fossilization of soft-bodied animals is less likely than fossilization of hard-bodied animals but it does occur.

软体植物的化石比硬体植物化石少见得多，但是也是可能发生的。

The Burgess Shale fossil site, well known for its fossil remains of soft-bodied marine animals, is also found there.

在这里的伯吉斯谢尔化石遗址里也有发现海洋软体动物的化石。

Before and after the 20th century, Sweden Andersson geologists to carry out geological studies here only under the guidance of the workers found the treasure house of ancient culture. From 1921 to 1923 here man found two teeth fossils here in 1929 unearthed fossils of ape-man skull, a sensation at that time the world's archaeological community.

20世纪20年代前后，瑞典地质学家安特生到这里进行地质研究，才在工人的指引下发现了这一古文化的宝库。1921年至1923年曾在这里发现了两枚猿人牙齿化石，1929年在这里发掘出猿人头盖骨化石，轰动了当时世界考古学界。

They focused on fossils in which an adult animal was found perched atop a clutch of eggs.

科学家们的注意力集中在某些化石上，在这些化石里，一只成年动物栖息于一窝蛋的上方。

Most curators of dinosaur palaeontology don't like me," saysSchweitzer."They like to keep their bones intact.

很多恐龙化石博物馆的馆长都不喜欢我，& Schweitzer 说，&他们不想别人破坏他们的骨头化石。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。