论文摘要
The Neoproterozoic was one of the important periods in the history of the evolution of the earth’s life.During this period, a series of complicated evolutionary activities such as the origin of multicellular form and epigenetic animals took place.The physical and chemical environment of the earth has also undergone tremendous changes.A large number of macroscopic carbonaceous fossils are preserved in the Jiuliqiao Formation, which is an ideal material for the study of early biological communities and their evolution.In the study, we identified the species of macroscopic fossils in the Jiuliqiao Formation by systematic paleontological methods.By taking account of the species richness, density, size, diversity, evenness and many other ecological indicators of different fossil communities, we can find the structure and evolution of the community.In combination with geochemical methods, we explored the evolutionary trends and causes of early eukaryotic ecological communities.The dominant species are Chuaria circularis and Shouchiennia shouhsienensis, with little intraspecific and interspecific competition pressure.There was periodic community prosperity rather than significant evolution of the community within the profile studied.
论文目录
文章来源
类型: 国际会议
作者: Xuan LIU,Lin DONG
来源: 第一届亚洲古生物学大会—暨中国古生物学会成立90周年纪念 2019-11-17
年度: 2019
分类: 基础科学
专业: 生物学,地质学
单位: School of Earth and Space Sciences, Peking University
分类号: Q911.2
页码: 22
总页数: 1
文件大小: 159k
下载量: 4