Muddy footprints left on a Kenyan lakeside suggest two of our early human ancestors were neighbors some 1.5 million years ago.

Researchers discovered 1.5-million-year-old footprints in Kenya's Turkana Basin, revealing coexistence of Paranthropus boisei and Homo erectus. The prints, showing distinct walking patterns, provide direct evidence of the two species' interaction and environment,

About 1.5 million years ago, individuals of two different species in the human evolutionary lineage trudged on a muddy lakeshore in northern Kenya, leaving behind intersecting trackways alongside the footprints of antelopes,

Scientists discovered fossilized footprints along Lake Turkana, Kenya, revealing that early human ancestors Homo erectus and Paranthropus boisei coexisted around 1.5 million years ago. The distinct footprints show different walking styles,

As Homo erectus and Paranthropus boisei – a direct ancestor and an ancestral relative of modern humans, respectively – lived their lives in the Turkana Basin, they left their footprints, impressed deep in the mud around the lake, probably with barely a thought.

Two species of ancient human relatives crossed paths 1.5 million years ago. Fossilized footprints in Kenya captured the moment, according to a new study.

Smithsonian: Fossil Footprints Reveal That Two Early Human Relatives Lived on the Same Landscape in Kenya 1.5 Million Years Ago

The discovery comes as the government seeks to raise the number of tourists visiting the country to 10 million annually by 2027.

Footprints preserved on the shore of Lake Turkana in Kenya seem to be from two ancient human species, showing they lived there at the same time about 1.5 million years ago

The research included professors Kevin Hatala from Chatham U. in Pittsburgh and Craig Feibel of Rutgers and showed two human species might have competed or cooperated.

Newly discovered 1.5-million-year-old footprints reveal how two extinct human species crossed paths within hours of each other.