trilobite

trilobites and dinosaurs are extinct.

三叶虫和恐已经绝种。

the trilobite's thorax has a variable number of articulated segments.

三叶虫的胸部有一些铰接部分。

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。

On the rank that reachs mummy from cranium of trilobite, dinosaurian egg, pithecanthrope, crockery, remains, get through gives birth to the channel that is born not to cease.

从三叶虫、恐蛋、猿人头盖骨、瓦、及木乃伊的列队上,打通生生不息的隧道。