saurodont

例句：

1. 1.The saurodont footprints are the oldest known in the fossil record.
   兽脚类恐龙的足迹是化石记录中最早的。
2. 2. The saurodont dinosaurs were the first to walk on land.
   兽脚类恐龙是第一批在陆地上行走的恐龙。
3. 3.The discovery of a saurodont tooth in Africa has sparked new research into the evolution of birds and mammals.
   在非洲发现一种兽脚类恐龙牙齿，激发了对鸟类和哺乳动物进化的新研究。