The fossil discovered at Sea-Tac Airport is at the Burke Museum, and named for the man who first came across it. Nearly 60% ...

At the museum Friday, Thompson told the Sentinel that the bone has been identified as the left radius bone of a Jefferson’s ground sloth, named after the Founding Father Thomas Jefferson ...

Four of these were species of ground sloth, three of which unknown to science ... The Megatherium fossils are two halves of the same skull, one held at the Hunterian Museum at the Royal College of ...

For a long time, scientists believed the first humans to arrive in the Americas soon killed off these giant ground sloths through hunting, along with many other massive animals like mastodons ...

Scientists say the Harlan's Ground Sloth could have weighed 1,500lb ... 16 May and it took scientists at the La Brea Tar Pits and Museum about eight days to identify them. The bison and sloth ...

The sloth is the world's slowest mammal ... dragging their bellies across the ground. If caught on land, these animals have no chance to evade predators, such as big cats, and must try to defend ...

Palaeontologist Thais Pansani stands in front the reconstructed skeleton of a giant ground sloth at the Smithsonian National Museum of Natural History in Washington, DC (Mary Conlon/AP ...