The 27 tools, discovered at a rich paleoanthropological site called Olduvai Gorge, were probably created by Homo erectus ... and more advanced ones called Acheulean technology including the ...

They show that by 1.5 million years ago, our ancestors (Homo erectus) had already developed ... to the more advanced Acheulean tools (1.7 million years ago), such as handaxes, cleavers, picks ...

“By producing technologically and morphologically standardized bone tools, early Acheulean toolmakers ... though we know both Homo erectus and Paranthropus boisei lived in the region at that ...

Prior to the new discovery, the earliest known datable bone tools were recovered from sites associated with Homo erectus ... being manufactured during the Acheulean period and used in such ...

Hypotheses for their use range from percussion tools to hunting implements ... "While hominin species were changing from Homo erectus to H. heidelbergensis, the round rocks were selected from ...

They show that by 1.5 million years ago, our ancestors (Homo erectus) had already developed ... to the more advanced Acheulean tools (1.7 million years ago), such as handaxes, cleavers, picks ...

The 27 tools, discovered at a rich paleoanthropological site called Olduvai Gorge, were probably created by Homo erectus ... and more advanced ones called Acheulean technology including the ...