Proboscidea

例句：

1. 1. The Proboscideans are the first known animals to have used tools.
   普罗布斯特德斯是已知的第一种使用工具的动物。
2. 2.The Proboscideans were apex predators in their ecosystem.
   普罗布斯特德斯是它们生态系统中的顶级捕食者。
3. 3. The discovery of fossils in Proboscideans has helped scientists understand the evolution of horses.
   在普罗布斯特德斯中发现的化石帮助科学家理解了马的进化过程。