Researchers studying the fossilized hands of 2-million-year-old hominins have concluded that human thumbs back then had the same movement ranges as our thumbs have today. It was the “dexterity” in...
In the geologic timescale that extends from 5.33 million to 2.58 million years ago, by universal standards, the Pliocene epoch was relatively recent, and it was at this time, when prehistoric life on...