Biodiversity Heritage Library/Wikimedia Commons/CC BY 2.0 It is the sheer size of the megatherium that makes it scary. This giant ground sloth lived in South America until about 10,000 years ago ...

Matheus Fernandes In a dusty rock shelter in Santa Elina, Brazil, two layers of giant ground sloth bones have been swallowed into the earth. The oldest sloth fossils in the deposit date back ...

The extinct giant ground sloths were some of the only mammals that had digestive systems large enough to process the huge avocado seeds whole. They feasted on the fruit and then dispersed the ...

Jefferson’s ground sloths are large, extinct, plant-eating mammals. At full size, they were about the size of an ox, up to three meters long, and weighed 2,200-2,425 pounds. These three-toed sloths ...

Mylodon darwinii is the scientific name for a species of extinct giant ground sloth. On finding the specimen ... a U-shaped bone that supports the tongue. Based on the size of the cavity, Owen ...

Nearly 12,600 years ago, during the Late Pleistocene era, a group of humans hunted and killed a giant ground sloth in Argentina, then left the animal's bones behind, along with their butchering knife.