英语听力：探索发现 2013-01-04 冰河新新州 Ice Age Oasis—10

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In the ice age, there were many other species that had travelled north to Florida, including a giant. This spectacular claw is 40cm long. And it belonged to a creature whose fossil remains⁶ have been found throughout Florida. It's the claw from a giant ground sloth⁷ and it really was a giant—6 metres long and weighing up to 40 tons. It rivalled the mammoth⁸ in size. 

 

Although the giant ground sloth is now extinct, like the opossum, it has family ties in South America. The family resemblance is easy to see. These menacing claws are used as grappling hooks, not weapons. They belong to the tree sloth, a peaceful vegetarian⁹ that spends its time eating leaves. It seems a far cry from our vision and an ice age beast.

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