“Megalonyx jeffersonii … it’s just one of those iconic animals that more people should know about,” said sloth expert Melissa Macias. The students found the bone last spring in an Ice Age ...

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.