动物学家们会知道寒武纪大爆发时期的进化顺序吗？
Will zoologists ever know the evolutionary sequences in the Cambrian explosion?
寒武纪大爆发后不久，泥石流迅速将数千只海洋动物掩埋在有利于石化的条件下。
Shortly after the Cambrian explosion, mud slides rapidly buried thousands of marine animals under conditions that favored fossilization.
然而，使所有的黑土形成冰川作用的问题是，在前寒武纪沉积物中广泛分布有黑土。
The problem with ascribing all tillites to glaciation, however, is that tillite deposits are widespread in Precambrian sediments.
第三个化石地层中既有软体动物，也有硬体动物，为寒武纪大爆发的结果提供了证据。
The third fossil formation containing both soft-bodied and hard-bodied animals provides evidence of the result of the Cambrian explosion.
尽管伊迪卡拉是以澳大利亚的一处地名而命名，但伊迪卡拉沉积层却遍及世界各地，并且可追溯到前寒武纪时代。
Although named after a site in Australia, the Ediacaran formation is worldwide in distribution and dates to Precambrian times.
石英是石英——由四个氧离子围绕的硅离子——200万年前的更新世石英和5亿年前的寒武纪石英之间没有任何区别。
Quartz is quartz—a silicon ion surrounded by four oxygen ions—there's no difference at all between two-million-year-old Pleistocene quartz and Cambrian quartz created over 500 million years ago.
这种迅速的动物起源和种类分化时期常常被称为“寒武纪大爆发”。
This rapid origin and diversification of animals is often referred to as "the Cambrian explosion".
寒武纪大爆发涉及迅速的进化分化，随之而来的是许多独特动物的灭绝。
The Cambrian explosion involved rapid evolutionary diversification, followed by the extinction of many unique animals.
发现并填绘出前寒武纪地层单元。
The Precambrian stratigraphic unit has been found and mapped.
被后寒武纪地台沉积盖层不整合覆盖。
It is overlain unconformably by the post Cambrian platform cover.
内部遗传因素是还关键的在寒武纪爆炸。
Internal genetic factors were also crucial in the Cambrian explosion.
因此，前寒武纪的动物肯定曾经生活在这么深的地方。
Precambrian animals must therefore have lived at such depths.
它们是前寒武纪岩石。
在5亿年前的寒武纪，似蠕虫生物逐渐演化成似鱼生物。
During the Cambrian period, 500 million years ago, worm-like creatures were evolving into fish-like creatures.
甘肃敦煌-北山地区广泛出露早前寒武纪岩石。
Early - Precambrian rocks are widely exposed in Dunhuang - Beishan area, GansuProvince.
片麻岩，变质岩，可以发现，在常见的前寒武纪地区。
Gneiss, a metamorphic rock, can be commonly found in Precambrian areas.
就全球而言，前寒武纪和新生代是金矿的重要成矿期。
Among them the precambrian and cenozoic eras are the main metallogenic epoches in the world.
发现的并不是前寒武纪的动物本身，而是它们的足迹。
These findings are not of Precambrian animals themselves, but of their tracks.
埃迪·卡拉化石的发现，将动物的形成时间从寒武纪又推早了不少。
The Ediacaran fossil record thus stretches the origins of animals to well before the Cambrian Explosion.
前寒武纪岩石被称为基岩，因为它们通常深埋于地表之下。
Precambrian rocks are described as "basement rocks" because they are usually buried deep under the surface.
本文描述了湘西黔东地区寒武纪沉积的等深岩类型和特征。
This paper describes the types and characteristics of contourites of Cambrian in Western Hunan and Eastern Guizhou.
就像早期网络的“寒武纪海洋基因”那样，信息被无限地复制、再复制。
Like a gene in the Cambrian seas of the early Web, information was copied and recopied endlessly.
霍尔丹，英国遗传学的先驱，他回答道：在前寒武纪的兔子化石就是了。
S. Haldane, a pioneering British geneticist, replied: "Fossil rabbits in the Precambrian era."
霍尔丹，英国遗传学的先驱，他回答道：在前寒武纪的兔子化石就是了。
S.Haldane, a pioneering British geneticist, replied: “Fossil rabbits in the Precambrian era.
这些复杂生命突然出现，暗示了寒武纪爆发式演化事件的存在。
The sudden emergence of those complicated life forms hinted the existence of evolution events of Cambrian explosion.
前三个时期合起来持续了40亿年，合称为前寒武纪（隐生宙）。
The first three eons, which together lasted nearly 4 billion years, are together known as the Precambrian.
化学化石(烷烃和卟啉)是前寒武纪地层中生命存在的唯一证据。
Chemical fossils (e. g. alkanes and porphyrins) are often the only evidence for life in rocks of PRECAMBRIAN age.
在寒武纪生命大爆发期间，主要模式转化只用了数千万年的时间。
During the Cambrian explosion, major paradigm shifts took only tens of millions of years.
10亿到5亿四千万年之间，就是在化石中发现许多生命之后的寒武纪大爆发时期。
This period, from 1 billion to 540 million years ago, is known as the "Cambrian explosion" after the riot of diverse life found in the fossil record.
10亿到5亿四千万年之间，就是在化石中发现许多生命之后的寒武纪大爆发时期。
This period, from 1 billion to 540 million years ago, is known as the "Cambrian explosion" after the riot of diverse life found in the fossil record.
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