The basis of many Upper Paleolithic tool forms from both the Old and New Worlds was the blade flake, a thin, parallel-sided flake that is at least twice as long as it is wide. Blade flakes were ...

Around 3.3 million years ago, hominins began using flakes of stone, perhaps to cut flesh from carcasses or chop plants. And by 1.5 million years ago, they were using more sophisticated tools made ...

“The tools show evidence that their creators carefully worked the bones, chipping off flakes to create useful shapes," said co-author Renata F. Peters, an archaeologist at University College London ...

Biface: A flaked stone tool that has been modified or retouched on both sides. Blade: A cutting tool made from a flake that’s length is at least twice its width, with parallel edges. Chisel: A hand ...