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.
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“前三叶虫统”和3个“三叶虫优势统”，反映了寒武纪生命发展的主要阶段。