Archaeologists in Missouri, US, have found the skeletal remains of a juvenile duck-billed dinosaur at an undisclosed location. Palaeontologist Guy Darrough said the estimated size of the duck-billed dinosaur was about 25-30 feet in length. "I can't imagine anything that's more impressive than what we discovered here. A new genus in species. It's [a] world-famous discovery," stated Darrough.