News Life New fossils from Patagonia may rewrite the history of duck-billed dinosaurs The finding may mean that some duck-billed dinos were not quite as widespread as thought Gonkoken nanoi, illustrated here, lived 72 million years ago in what is now subantarctic Chile. The creature belonged to a lineage of duck-billed dinosaurs that had since gone extinct elsewhere in the world. Mauricio Álvarez Abel Share this:EmailFacebookTwitterPinterestPocketRedditPrint By Jake Buehler June 16, 2023 at 2:00 pm Fossils from the southern tip of Chile are adding a wrinkle to researchers’ understanding of how duck-billed dinosaurs conquered the Cretaceous world.