The fossils may be a million years old.

这些化可能有100万年了。

Glauconite, detrital carbonate skeletal debris, marine fossils, and collophane are commonly present.

海绿、碳酸盐骨骸碎屑、海相化和胶磷矿普遍出现。

Inland foraminifer fossils are considered as one of good indicators of marine facies.

内陆有孔虫化群被一些学者视为是海侵或残留海的指相化。

According to the conodont and fusulinid fossils,their ages are determined to be Devonian-Permian.

根据所含化确定地层形成时代为泥盆纪至二叠纪。

The man is a fossil.

那人是个老顽固。

They were searching for fossils.

他们在找化。

In the pale light of the tunnel, 30-foot fossil traces of lycopsid gleam slickly in the shale roof like alligator skins.

它们看起来一棵棵巨型的芦笋。在隧道内黯淡的灯光下，页岩顶部30英尺长的松化鳄鱼皮般发出柔滑的光亮。

The total sedimentation was that rivers were branching and migrating frequently,and the sedimentary structures and fossil of ichnite were growing generally.

其总体沉积特征为:河道频繁分支与迁移,发育各种沉积构造及生物化。

Abstract : Wollemia nobilis is a monotypic genus in Araucariaceae and one of the oldest living fossil plants in the earth.

摘要 ： 瓦勒迈松是南洋杉科单型属植物，是目前地球上最古老的“活化”植物之一。

Collects the amateur Donovan nine range estimates after the cultural relic to recognize, Mr.Chen picks two the fossil is the very valuable zoolite.

经文物收藏爱好者唐文玖目测认定，陈先生捡到的两块“化”是很有价值的动物化。

Rosenberg, a paleoanthropologist at the University of Delaware, specializes in pelvic morphology and has studied hominid fossils from Europe, Israel, China and South Africa.

罗森柏格是古人类学家，任教于美国德拉瓦大学，专长是骨盆形态，研究过欧洲、以色列、中国、南非出土的人科化。

Darwin expected species to change slowly, but not at the same rate – some organisms such as Lingula were unchanged since the earliest fossils.

达尔文认为物种变化是缓慢的，但不是以同样的速度变化--一些如海豆芽一样的生物从最早的化以来未发生改变。

The geologist found many uncovered fossils in the valley.

在那山谷里,地质学家发现了许多裸露的化。

Dendrochronology A method of archaeological dating by the ANNUAL RINGS of tree, used when the lifespans of living and fossil trees in an area overlap.

在一定的区域内当生活树木以及化树木的寿命有重叠时，通过树木的年轮来推测考古学年代的方法。

Biorefinery is a new industrial mode substituting renewable biomass for unrenewable fossil resource to produce bioenergy or chemicals and securing the sustainable development of social economics.

生物炼制是以可再生生物质资源为原料,生产能源与化工产品的新兴工业模式。

From 2003 to 2004, we collected a large amount of Nautiloid and Graptolite fossils in upper metamorphic formations of Mayigangri area and determined the age to be middle and Late Ordovician-Silurian.

在羌塘南部地区发现有可靠化依据的早古生代地层存在尚属首次。