iguanodon

例句：

1. 1.The iguanodon is one of the largest and most powerful predators in the fossil record.
   剑齿虎是化石记录中最大的和最强大的食肉动物之一。
2. 2.This iguanodon had a distinctive snout shape that helped it hunt prey efficiently.
   这种剑齿虎具有独特的鼻部形状，这有助于它高效地捕猎猎物。
3. 3. The discovery of iguanodon fossils has shed light on the evolution of large mammals during the Mesozoic era.
   发现剑齿虎化石揭示了在中生代时期大型哺乳动物演化的线索。