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These Massive Tunnels Were Dug By Giant Sloths

WOW...... Is this for real?

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Owlscrying
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Unread post Sat Apr 22, 2017 4:30 pm

Across northern South America, there are hundreds of colossal tunnels large enough for humans to walk through, but they weren’t dug by men. Nor they were formed by any known geological process. But their creators have left evidence all around the walls and ceilings—giant claw marks.

Geologists call these tunnels “paleoburrow,” and they are believed to have been dug by an extinct species of giant ground sloth.

The term was coined by Heinrich Frank, a professor at the Federal University of Rio Grande do Sul, in Brazil, who chanced upon one at a construction site in the town of Novo Hamburgo, in the early 2000s. Up until then, little was known or written about these tunnels in scientific literature. But since he came upon his first, Heinrich Frank and other researchers have discovered more than 1,500 tunnels, in the state of Rio Grande do Sul alone. Some of these burrows measure hundreds of feet long and branched off into several direction.

The largest one measured 2,000 feet long, six feet tall and three to five feet wide. An estimated 4,000 metric tons of dirt and rock were dug out of the hillside to create the burrow. It was evidently the work of not one or two individuals but several generations.

Frank believes the burrows were dug by a genus of giant ground sloths, as large as modern elephants, that once lived in South America until about 10,000 years ago. They were some of the biggest land mammals on earth exceeded in size only by the mammoth. Others believe that extinct armadillos, which were smaller than the giant sloths, were responsible for the burrows.

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Owlscrying
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Unread post Sat Apr 22, 2017 4:35 pm



Ground sloths evolved in South America around 35 million years ago, and migrated into North America, starting around 8 million years ago, with the last species arriving during the Pleistocene. All four species became extinct approximately 10,000 years ago.

 
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Owlscrying
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Unread post Sat Apr 22, 2017 4:37 pm

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Ground sloths were roughly 20 feet long and weighed about 3 to 4 tons. The smallest species -- Shasta Ground Sloth -- was about 9 feet long and weighed up to 550 pounds (about the size of a modern black bear). They had very large claws, even though they were herbivores. The shape of their hip bones indicates that they could stand up on their hind legs, allowing them to reach high up into trees for the best leaves and twigs. It is likely that they walked on the sides of their hind feet and backs of their forefeet.

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Elysis
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Unread post Tue Jun 06, 2017 12:05 pm

This kinda reminds me about the devils corkscrews....

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