Ancient footprints discovered in Kenya belong to two different species of human relatives who walked on the same ground at the same time 1.5 million years ago, a study found.

Two sets of fossilized footprints from early human species were made within a few hours of each other about 1.5 million years ago, researchers suggest. By Tom Metcalfe edited by Andrea Thompson.

Scientists know this because they have examined 1.5-million-year-old fossils they unearthed and have concluded they represent the first example of two sets of hominin footprints made about the ...

A newly discovered set of footprints in Kenya provides the first evidence that two different species of ancient human relatives walked the same ground simultaneously 1.5 million years ago.