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导言早期生物历史的总体画面是地质时期巨大延伸逐步演化构成的。为了澄清地球早期历史进化的模式,本文特选定800Ma(±100Ma)这一短暂的时间间隔,因为此时沉积岩和微生物化石显示得比较充分。
Introduction The overall picture of early biological history is composed of the gradual evolution of the immense extension of the geological period. In order to clarify the evolutionary pattern of the Earth’s early history, this paper selects a short time interval of 800Ma (± 100Ma), because the sedimentary rocks and microbial fossils appear more adequate at this time.