The Unknown Oldowan: ~1.7-Million-Year-Old Standardized Obsidian Small Tools from Garba IV, Melka Kunture, Ethiopia, di R. Gallotti, M. Mussi, December 21, 2015, DOI: 10.1371/journal.pone.0145101 - free access - The Oldowan Industrial Complex has long been thought to have been static, with limited internal variability, embracing techno-complexes essentially focused on small-to-medium flake ...