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Popular Science (EUA)
Em 2025: 2 notícias
Desde 1995: 9 notícias

8,000-pound sloths once roamed North America. Where'd they go?

Publicado em 23 de maio de 2025
Giant sloths used to roam all over North America. Over 10 times bigger than today's sloths , many lived on the ground instead of in the trees and their closest living relatives are actually armadillos and anteaters. The largest of these ancient animals were those in the genus Megatherium –roughly the size of a modern Asian bull elephant and weighed about 8,000 pounds. But how did they grow so large–and why did they shrink down? A new analysis of over 400 fossils found that [...]