The students found the bone last spring in an Ice Age sediment deposit, placing it in a ballpark between 11,500 years and 300,000 years old. It’s the first Jefferson’s ground sloth fossil ever ...

these sloths were one of the strangest animals of the ice age. They weighed as much, or more, than the short-faced bear at 1 tonne and stood 3 metres tall, growing to the size of an ox.