Gonkoken nanoi is the first non-hadrosaurid duck-billed dinosaur known from the southern supercontinent of Gondwana. Gonkoken nanoi. Image credit: Gabriel Diaz Yantén (Paleogdy). Gonkoken nanoi lived in what is now Chile during the Late Cretaceous epoch, some 71 million years ago. This dinosaur was between 3.5 and 4 m (11.5-13 feet) in length and weighed up to 1,000 kg. The animal belongs to Hadrosauroidea, a superfamily of dinosaurs that includes...
