The newly unearthed bone tools come from a period when early humans were transitioning between the Oldowan and Acheulean stone tool traditions. The Oldowan period, dating from 2.6 million to 1.5 ...

It has documented the evolution from the simple chopping tools and stone knives of the Oldowan industry (about 2 million years ago) to the more advanced Acheulean tools (1.7 million years ago ...