A new species of horned dinosaur unearthed in Mexico has larger horns that any other species — up to 4 feet long — and has given scientists fresh insights into the ancient history of western North America, according to paleontologists.
A new species of horned dinosaur unearthed in Mexico has larger horns that any other species — up to 4 feet long — and has given scientists fresh insights into the ancient history of western North America, according to paleontologists.