Tag: duckbilled

Fossils from the southern tip of Chile are adding a wrinkle to researchers’ understanding of how duck-billed dinosaurs conquered the Cretaceous world.

Duck-billed dinos known as hadrosaurids were highly successful and lived on most continents by the end of the Cretaceous, about 66 million years ago. Now, a study shows that an older duck-billed lineage appears to have thrived some 72 million years ago in subantarctic South America, potentially millions of years before hadrosaurids reached the continent, researchers report June