Sloths are a Neotropical group of xenarthran mammals constituting the suborder Folivora, including the extant arboreal tree sloths and extinct terrestrial ground sloths. Noted for their slowness of movement, tree sloths spend most of their lives hanging upside down in the trees of the tropical rainforests of South America and Central America .

2018年4月25日 · The dramatic scene has been preserved for millennia in the first-ever trackways, or sets of fossilized footprints, that may chronicle human hunters in action against big prey. In some cases, the human prints lie inside those of the sloths, indicating hot pursuit.

2018年4月25日 · We have evidence for: (i) sloth and human tracks in close spatial association, (ii) superimposed human and sloth tracks with geological evidence that suggests temporal association, (iii) increased sloth trackway tortuosity related to the presence of human tracks, and (iv) unusual circular sloth trackways.

2024年12月22日 · New research revealed that the first humans to arrive in the Americas lived alongside giant ground sloths for thousands of years, challenging previous theories about human migration and megafauna...

2023年7月11日 · The date that humans arrived in South America has been pushed back to at least 25,000 years ago, based on an unlikely source: bones from an extinct giant ground sloth that were crafted into...

2024年12月20日 · For a long time, scientists believed the first humans to arrive in the Americas soon killed off these giant ground sloths through hunting, along with many other massive animals like mastodons,...

2018年4月30日 · Researchers recently identified a particularly curious tale: ancient humans tracking a giant sloth. As Ed Yong reports for The Atlantic, scientists spotted a set of giant sloth footprints with...

2023年7月14日 · Based on markings on the sloth bones, scientists concluded that humans—rather than other animals—very likely drilled the holes into the bones.

2018年4月25日 · Last April, Matthew Bennett was lying on a white salt flat in New Mexico, uncovering fossilized footprints that had been preserved in the white rock. The print belonged to a ground sloth —a bulky...

2024年10月29日 · 14,000 years ago, an early human modified a giant ground sloth tooth for an unknown purpose. Thaís Pansani’s research explores what these altered fossils reveal about humans’ relationship ...