Ancient 'Cow of the Cretaceous' Reclassified as a Duck-Billed Dinosaur
Scientists reexamined 1916 fossils from New Mexico and identified a new species of giant duck-billed dinosaur, Ahshislesaurus wimani, which lived about 75 million years ago and could reach 40 feet in length, revealing greater diversity among hadrosaurids during the late Cretaceous period.