化石层序律 law of faunal succession ; Principle of fossil succession ; law of fossil sequenece
风化石层 weathered granite horizon
植物化石层 plant bed
生物化石层序学 biostratigraphy
道虎沟化石层 Daohugou fossil-bearing beds
石化钙积层 [土壤] petrocalcic horizon
石化石膏层 [土壤] petrogypsic horizon
硬化石膏层土壤 petric gipsisol
鱼化石沈积层 fishbed
事实上，含有软体动物的化石层已经被发现很多年了。
In fact, fossil beds containing soft-bodied animals have been known for many years.
像波基斯页岩这样的化石层表明进化不应该总被看作是一个缓慢的过程。
Fossil formations like the Burgess Shale show that evolution cannot always be thought of as a slow progression.
这个十分重要的发现来自辽宁省的一个文明的的化石层。
The crucial discovery comes from a famous fossil bed in Liaoning province.
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