Other researchers have used indirect methods to study the use of projectiles, such as analyzing impact fractures on ancient stone points or identifying traces left by hafting on the points. Such evidence suggests that early humans created throwing spears as early as 500,000 years ago in Africa. But that kind of evidence leaves room for doubt and is frequently disputed.
Archaeologist Corey O'Driscoll of South East Archaeology in Canberra became interested in the traces left by hurled spears [...] ScienceNOW
Actualización 22-05-13. Un estudio demuestra que los seres humanos comenzaron a utilizar armas arrojadizas hace por lo menos 91.000 años
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