澄江动物群和寒武纪大爆发

• 作 者: 孙卫国
• 出 处: 生物进化
• 发表日期: 2007年02期
• 关键词: 寒武纪大爆发 动物群 地层序列 动物化石 生物演化 早寒武世 叶足 分类群 多细胞动物 《物种起源》

在漫长的生物演化史上,最令人感兴趣而又迷惑不解的现象莫过于寒武纪早期生物演化的爆发性辐射,即通常所说的“寒武纪大爆发”。在漫长的生物演化史上,最令人感兴趣而又迷惑不解的现象莫过于寒武纪早期生物演化的爆发性辐射,即通常所说的“寒武纪大爆发”。在世界各地的地层序列中,以三叶虫为代表的寒武纪动物群几乎是在寒武纪之初突然涌

In the long history of biological evolution, the most interesting and puzzling phenomenon than the explosive evolution of the early Cambrian biological radiation, which is commonly referred to as the “Cambrian explosion.” In the long history of biological evolution, the most interesting and puzzling phenomenon than the explosive evolution of the early Cambrian biological radiation, which is commonly referred to as the “Cambrian explosion.” In the sequence of stratigraphy all over the world, the Cambrian fauna typified by trilobites is almost sudden in the beginning of Cambrian