贵州瓮安磷矿新元古代微体生物化石

A Neoproterozoic Doushantuo Microfossil Assemblage——Wengan Biota at Wengan County of Guizhou in South China

发现于新元古代陡山沱期的瓮安生物群是一个重要的化石生物群。它的大部分化石保存了较完好的细胞结构、组织分化特征和其他微细构造 ,经描述的属种超过 5 0个。初步研究揭示出地球早期生命漫长的进化过程 ,在距今 6亿年前就已经出现了许多高级后生生物。对瓮安生物群的深入研究将有助于进一步了解早期生命的起源和演化过程。

During the last decade, Wengan Biota, a fossil assemblage discovered in the phosphorites of the Neoproterozoic Doushantuo formation at Wengan County of central Guizhou Province is composed of planktonic acritarchs, benthic multicellular algae, cyanobacteria, bacteria and some possible animal remains. Since 1986, more than 20 papers and 51 taxa have been published and reported on the fossil assemblage. Although the affinities of some animal remains are still under investigation, the three dimensional well preserved microfossil assemblage is important for the further understanding of final Proterozoic biosphere. The preliminary research on Wengan Biota reveals that there undoubtedly exists a long evolution for the early life on the earth and many high grade epigenetic organism appeared in 600 Ma ago. The further study of Wengan Biota will be of benefit to the understanding of the genesis and evolution of early life.