Sloth Evolution Timeline. One of the ancestors was seven metres long and lived a full active life on the ground the megatherium which eventually grew to be the size of an elephant and weighed several tons. They weighed more than an elephant.
The modern sloth developd into a completely unique animal. Existed 35 million years ago. They have long snorts unlike modern day sloths.
They weighed more than an elephant.
They weighed more than an elephant. Almost 90 of sloth species including all the ground sloths went extinct around 10 000 years ago. They tested different statistical models of body size evolution against data for 57 species of living and extinct sloth. The giant ground sloth.
