Muddy footprints found beside Lake Turkana, Kenya reveal two ancient hominin species were once neighbors 1.5 million years ago.

The researchers believe the footprints were made within hours of each other on the shores of an ancient lake in present-day Kenya.

About 1.5 million years ago, two different species of early man likely came within hours of passing each other on the shores of what is now known as Lake Turkana in Kenya. Two sets of footprints tracing each hominin's path represent the first geological record of such an example,

A 1.5-million-year-old lakebed from Kenya shows two ancient human relatives cohabitating an environment, shaking up our ancestors' story.

Two species of ancient humans walked beside each other 1.5 million years ago, fossil footprints have revealed.

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.

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

Human footprints stir the imagination. They invite you to follow, to guess what someone was doing and where they were going. Fossilized footprints preserved in rock do the same—they record instances in the lives of many different extinct organisms,

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,

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.

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