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描述了湖北秭归县庙河村寒武系最底那(天竺山段)硅化微体化石13属16种,并论述了其地层意义。所有微体化石皆见于燧石切片中。此组合含大量小个体的具刺疑源类,以Micrhystridium ampliatum Wang为主,并与Paracymatiosphaera spp.,其它球形分子Leiosphaeridia,Favososphaeridium,Eoaperturilites及丝状体Obruchevella和Megathrix共生。此地真正的陡山沱组是以含大量的和形态复杂的疑源类及简单的丝状体和球状化石为特征。这两个可靠的微体化石组合的发现和区分对本区及邻区震旦系—寒武系过渡层的划分和地层对比有重要意义。
This paper describes 16 species of 13 genera of silicified microfossils from the bottom of the Cambrian in the Miaohe Village, Zigui County, Hubei Province, and discusses their significance. All microfossils are found in chert slices. This assemblage contains a large number of small individuals of the predominant source species, mainly Micrhystridium ampliatum Wang, and with Paracymatiosphaera spp., Other globular molecules Leiosphaeridia, Favososphaeridium, Eoaperturilites and the filamentous Obruchevella and Megathrix symbioses. The true Doushantuo Formation here is characterized by a large number of complicated and complicated sources of doubt and simple filaments and globular fossils. The discovery and differentiation of these two reliable microfossil assemblages are of great importance to the division and stratigraphic correlation of the Sinian-Cambrian transitional layer in this area and its adjacent areas.