This volume is the result of a long-term research project on the cultural complexes of the Châtelperronian and Aurignacian in Western and Central Europe and the technology of their archaeological materials. An introduction by the editor is followed by 10 papers. These deal with the local origins of the Châtelperronian, a critical assessment of the bone tools of the Châtelperronian, the open-air sites of Canaule, Le Basté and Bidart, the settlement and techno-economic systems of the Châtelperronian from a functional point of view, the bone tools of the Aurignacian in Western Europe, the Châtelperronian layers of Ormesson-Les Bossats, a research programme on Châtelperron as a key