Tuanshanzi Formation

例句：

1. 1.The Tuanshanzi Formation is a significant discovery in the field of archaeology.
   屯山子组是考古学领域的一个重要发现。
2. 2. The Tuanshanzi Formation contains a wealth of information about ancient human life.
   屯山子组包含了关于古代人类生活的丰富信息。
3. 3.The Tuanshanzi Formation has been studied extensively by archaeologists for its unique characteristics.
   屯山子组已经被考古学家广泛研究，因为它的独特特性。