Caractérisation techno-typologique et position chronostratigraphique de plusieurs industries à rares bifaces ou amincissements bifaciaux du nord de la France

Techno-typological characterization and chronostratigraphic position of several industries with rare bifaces and bificial productsin northern France : This paper presents an overall view of fifteen lithic series recently discovered in northern France. Bifaces are rare in these assemblages charaterized by flake, blade and point production. The retouched tools are not very numerous. This highlights the importance of the non retouched artefacts ('a posteriori' tools). The precision of the chronostratigraphical framework brings a new contribution to the knowledge of the lithic industries of the Middle Palaeolithic