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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. | ||
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? | ||
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. | ||
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. | ||
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. | ||
概述了中国在晚前寒武纪——寒武纪生物化石群研究多方面（尤其是大化石）的主要成就。 The many achievements in the study on. the fossils (in especial megafossils) of late Precambrian - Cambrian in China are outlined. | ||
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. | ||
第一次世界大战于1914年爆发。 The first World War broke out in 1914. | ||
