New duck-billed dino discovered in New Mexico

It may look like a certain type of duck-billed dinosaur — and quack like one, too.

But dinosaur bones identified in northwestern New Mexico, long believed to be Kritosaurus navajovius, actually belong to something new, according to a recently published paper.

Hadrosaurid ahshislesaurus wimani, named for the Ah-shi-sle-pah Wilderness where it was found, was a massive, plant-eating, duck-billed dinosaur that may have stretched more than 35 feet long and weighed more than 18,000 pounds.

The discovery is a long time coming. Although the specimen's bones — an incomplete skeleton with a partial skull — were discovered in San Juan County more than a century ago, they were believed for decades to belong to Kritosaurus navajovius , another hadrosaurid. But new research, with help from researc