Dinosaur Bloopers

In 1–2 sentences, explain how scientists discovered new information about the Iguanodon and what they learned about the way the dinosaurs walked.
Can you do it like a 4th grader would do it

Scientists discovered new information about the Iguanodon by studying its footprints and bones. They learned that Iguanodons walked on their hind legs most of the time, but sometimes they walked on all fours like a big lizard.