Researchers studying a trail of fossilized footprints on a remote New Mexico salt flat have determined the tracks tell the story of a group of Ice Age hunters stalking a giant sloth. Park naturalist David Bustos says the series of tracks and adult and children's footprints found at White Sands National Monument shows someone followed a now-extinct giant ground sloth, purposely stepping in their tracks as they did so. White Sands contains a sizeable collection of fossilized tracks, including saber-toothed cats and wooly mammoths. "We see interesting circles of sloth tracks in these stalked trackways which we call 'flailing circles.' At White Sands, the scientists used an approach called relative dating to estimate a minimum age for the fossils.

Source: ABC News May 05, 2018 16:09 UTC