A fossil site in Canada has yielded the heaviest Tyrannosaurus rex specimen ever found—an animal that weighed an estimated 19,500 pounds in life, far heftier than most elephants alive today.

The dinosaur, unveiled last week in The Anatomical Record, consists of a skeleton that's about 65 percent complete, including the skull and hips along with some of its ribs, leg bones, and tail bones. Nicknamed “Scotty,” the tyrannosaur was a senior by this species' standards, making it to at least the age of 28.

Some 68 million years ago, the Canadian landscape Scotty knew was a subtropical coastal paradise—but life was no vacation. The dinosaur's remains include a broken and healed rib, a massive growth of bone in between two teeth—a