iguanodon
/ɪˈɡwɑːnədɑn/
noun
- A large plant-eating dinosaur from the early Cretaceous period, known for its thumb spike and upright posture.
- Scientists believe the iguanodon could walk on two or four legs.
- Children love learning about the iguanodon because it looks like a giant iguana.
- The museum's fossil of an iguanodon shows its distinctive thumb spike.