metaphyte

Not only most metazoan phyla made their debut at the earliest Cambrian, but also the fossil record like calcareous metaphyte flora and acritarch change dramatically nearly at the same time.

地球外部圈层的演替变化，陆重组、地磁极移、古气候、洋地球化学性质的变化以气氧含量的变化等在时间上与这一生命爆发事件有关系。