Footprints of two 1.5 million-year-old human species found in Kenya
Muddy footprints left on a muddy lakeshore in northern Kenya suggest two of our early human ancestors – Homo erectus and Paranthropus boisei – lived about 1.5 million years ago. Intersecting trackways alongside the footprints of antelopes, horses, warthogs, giant storks, and other animals were found. These tracks turned into
