metazoan

1.The metazoan zooplankton species were mainly composed of eurythermal ones and only a few thermophil ones were also found.

星湖的后生浮游动基本上为广温种，一些嗜暖种。

2.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，诸如大陆重组、地磁极移、古气候、大洋地球化学性质的变化以及大气氧含量的变化等在时间上与这一生命爆发事件有耦合关系。