二叠纪的

例句：

1. 1.The Permian Period was a time of great diversity in the Earth's ecosystems.
   二叠纪时期地球生态系统多样性非常显著。
2. 2.The discovery of ammonites in the Permian rocks has led to new insights into marine life.
   在二叠纪地层中发现的有孔虫为研究海洋生物提供了新的见解。
3. 3.The Permian period is often considered one of the most important for the study of Earth's history.
   二叠纪时期通常被认为是研究地球历史最重要的时期之一。