Every so often, a discovery comes along that changes our understanding of the distant past. In the vast landscapes of the ...

The new analysis of the tooth found that these sloths' diets varied from season to season, which helped them survive their harsh environment. Ancient ground sloths, officially called Eremotherium ...

Jefferson’s ground sloths lived near creeks and rivers and ... fossil adds one more piece to the still incomplete puzzle of ancient Santa Cruz, which would have had a coastline that was miles ...

In other words, our ancestors managed to push these giant ground sloths to extinction in just two millennia. Read More: Divers found fossils of an ancient giant sloth hidden in a sinkhole.