Nothosauria

例句：

1. 1.Nothosauria is a rare species found only in the rainforests of Central America.
   无齿蜥蜴是一种只在中美洲雨林中发现的稀有物种。
2. 2.The discovery of this species has sparked interest in the evolution of amphibians.
   这种物种的发现引发了对两栖动物进化的兴趣。
3. 3. Nothosauria was once thought to be extinct, but recent research has revived hope for its survival.
   无齿蜥蜴一度被认为是灭绝的，但最近的研究表明它有复活的希望。