Thaís Pansani examines giant sloth bones dated to about 25,000 to 27,000 years ago from central Brazil, some of which appear to be burned by human-made fire, at the Smithsonian Institution in ...

Giant sloths and mastodons lived with humans for millennia in the Americas, new discoveries suggest Artifacts found in Santa Elina are roughly 27,000 years old — more than 10,000 years before ...

Giant sloths and mastodons lived with humans for millennia ... This illustration provided by researchers depicts a person carving an osteoderm from a giant sloth in Brazil about 25,000 to 27,000 ...

Artifacts found in Santa Elina are roughly 27,000 years old — more than 10,000 years before scientists once thought that humans arrived in the Americas.

This illustration provided by researchers depicts a person carving an osteoderm from a giant sloth in Brazil about 25,000 to 27,000 years ago. (Júlia d'Oliveira via AP) Save Story ...

This illustration provided by researchers depicts a person carving an osteoderm from a giant sloth in Brazil about 25,000 to 27,000 years ago.

Artifacts found in Santa Elina are roughly 27,000 years old — more than 10,000 years before scientists once thought that humans arrived in the Americas.

This illustration provided by researchers depicts a person carving an osteoderm from a giant sloth in Brazil about 25,000 to 27,000 years ago.

This illustration provided by researchers depicts a person carving an osteoderm from a giant sloth in Brazil about 25,000 to 27,000 years ago.

This illustration provided by researchers depicts a person carving an osteoderm from a giant sloth in Brazil about 25,000 to 27,000 years ago.