Muddy footprints suggest 2 species of early humans were neighbors in Kenya 1.5 million years ago - The Associated Press
- Muddy footprints suggest 2 species of early humans were neighbors in Kenya 1.5 million years ago The Associated Press
- Footprints Suggest Different Human Relatives Lived Alongside One Another The New York Times
- Rare footprints suggest two of our prehistoric ancestors may have met The Washington Post
- Footprints reveal the coexistence of two human species 1.5 million years ago EL PAÍS USA
- Mysterious Human Footprints From 1.5 Million Years Ago Reveal a Surprise ScienceAlert