stratigraphic paleontology

例句：

1. 1.Scientists use seismic data to study the stratigraphic layers of the Earth's crust.
   科学家使用地震数据来研究地球地壳的地层。
2. 2.The geologist is analyzing the stratigraphic layers in the area for signs of ancient volcanic activity.
   这位地质学家正在分析该地区的地层，寻找古代火山活动的迹象。
3. 3. The fossils found in the stratigraphic layer suggest that the dinosaurs lived during a timewhen the Earth was young.
   在地层中发现的化石表明恐龙生活在地球年轻的时期。