biolith

例句：

1. 1.The discovery of this biolith has sparked a new era in paleontology.
   这种生物石的发现开启了古生物学的新纪元。
2. 2.The team spent months analyzing the biolith to determine its age and origins.
   该团队花了数月时间分析这种生物石，以确定其年龄和来源。
3. 3.The biolith is believed to have been formed millions of years ago during the dinosaur era.
   据信这种生物石是在数百万年前恐龙时代形成的。