- A fossil first: Scientists find 1.5-million-year-old footprints of two different species of human ancestors at same spot Phys.org
- Mysterious Human Footprints From 1.5 Million Years Ago Reveal a Surprise Yahoo! Voices
- Muddy footprints suggest 2 species of early humans were neighbors in Kenya 1.5 million years ago The Associated Press
- Rare footprints suggest two of our prehistoric ancestors may have met The Washington Post
- Footprints Suggest Different Human Relatives Lived Alongside One Another The New York Times