"Iguanodon was a relative of the duckbill. It won international fame as the first dinosaur made known to science, when it was dug from road-gravel quarries in Sussex, England, in 1822. The iguanodont's adaptations were styled after the duckbill's—closely packed chopping shredding teeth (although iguanodont's weren't as complex as duckbill's)."