寒武纪

Chen Huifang. 1991.Discovery of the old crystalline basement and komatiite on Hainan island.Geotectonica et Metallogenia,15(1) :62.

[1]陈惠芳.1991.海南岛前寒武结晶基底和科马提岩的发现.大地构造与成矿学,15(1):62.

The new framework, comprising a pre-trilobite series and three trilobite-dominated series, reflects the major evolutional stages of the life on Earth during Cambrian Period.

新的划分方案包括1个“前三统”和3个“三势统”，反映了寒武生命发展的主要。

To the question why we do not find rich fossiliferous deposits belonging to these assumed earliest periods prior to the Cambrian system, I can give no satisfactory answer.

于为什么我们没有发现大量的属于这个比寒武还要早的时期的化石，我无法给出满意的答案。