This work envisions the Solutrean from the view point of lithic techno-economic patterns. The analysis of several key-assemblages from the beginning of the Solutrean in south-western France is able to distinguish two distinct typo-technological stages: the Protosolutrean (including Vale Comprido points) and the Early Solutrean characterized by the development of pointes a face plane. The comparison between these two sets of complexes leads to the proposal of a typo-technological mechanism for the evolution of lithic tools and core reduction sequences from the Protosolutrean to the Early Solutrean. The Solutrean is thus defined by an evolution towards more diversified and specialized hunting weapons that represents the adaptation of human groups to the rigorous climaticd context of the Late Glacial Maximum. French text.