At Alkali Flat, a site near White Sands National M...  ...arty of Pleistocene humans as they fought against giant ground sloths .“Most of the time they are invisible. There...  ...reveal that ancient humans once hunted a group of giant sloths along the shores of Lake Oter...

Giant ground sloths called lestodons once roamed the grassy plains of...  ...an grow, including whole avocados, pits and all. Giant sloths , along with megafauna like gomphotheres and glypt...  ...and large-pitted, all the better to attract huge sl...

An engraved bone, believed to be from a mastod...  ...An engraved bone, believed to be from a mastodon, giant sloth or mammoth, may be the oldest example of primitiv...