fossils

the fossils are extracted from the chalk.

这些化石是从白垩岩中剥离出来。

The fossils may be a million years old.

这些化石可能有100万年了。

embed a post in concrete; fossils embedded in shale.

把柱子泥中；牢牢页岩中化石

The geologist found many uncovered fossils in the valley.

那山谷里,地质学家发现了许多露化石。

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

内陆有孔虫化石群被一些学者视为是海侵或残留海化石。

In organic lamina, the content of organic carbon exceeds 5% and algae fossils and ichthyolite are abundant.

其中有机质纹层中有机碳含量5%以上，富含藻类化石及鱼化石等；

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

海绿石、碳酸盐骨骸碎屑、海化石和胶磷矿普遍出现。

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

根据所含化石确定地层形成时代为泥盆纪至二叠纪。

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.

羌塘南部地区发现有可靠化石依据早古生代地层存尚属首次。

2004年我们玛依岗日一带变质岩系上部采获大量鹦鹉螺类和笔石类化石,经研究确定时代属中、晚奥陶世-志留纪.

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.

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、南非出土人科化石。