Shichien-feng Formation

例句：

1. 1.The Shichien-feng Formation is a key part of the geological record.
   石炭系地层是地质记录的关键部分。
2. 2. The study of the Shichien-feng Formation has revealed new insights into the Earth's history.
   研究石炭系地层揭示了对地球历史的新见解。
3. 3. The fossils found in the Shichien-feng Formation are significant for understanding the early life on Earth.
   在石炭系地层中发现的化石对于理解地球上早期生命具有重要意义。