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Homa Peninsula Paleoanthropology Project

Oldowan artifacts were found among fossilized hippopotamus skeletons at the Nyayanga site.

The large rock on the left is the source material for Oldowan artifacts. Hominins hammered sharp chips off the core rock to be used as tools.

Example of an Oldowan percussive tool found at the Nyayanga site in 2016.

Scientists discovered two molars of Paranthropus, a hominin that is not a direct human relative.

Scientists have unearthed more than 300 stone tools at the Nyayanga site in southwestern Kenya (pictured in 2014, prior to excavation).