International audienceFrench Gravettian has been revisited, based on lithic tools. The structuration emphasizes several industrial clusters, all of them in a stratigraphical sequence : Fontirobertian, indifferentiated Gravettian, Noaillian, Rayssian, Laugerian, Protomagdalenian. The identity between the Perigordian IV and the Perigordian Vb is demonstrated, and the involved stratigraphical clarifying has been explicited. The hypothesis of a Bayacian has been detailed. The paleoclimatical environment of the Gravettian shows that the Bayacian, the Fontirobertian and the indifferentiated Gravettian are present in the inter Maisieres-Tursac period, while the Noaillian and the Rayssian are present during the Tursac oscillation, and the Laugerian...