“…"Soft" means in this case relatively low scratch hardness, as it is the case for sandstone, limestone or flint nodules with a thick, chalky cortex (Pelegrin, 2000). The fact, that this kind of hammer is commonly used in the Late Palaeolithic led to the interpretation that the sites of the facies of Cepoy-Marsangy represent a stage of development from the Magdalenian to the Late Palaeolithic (Bodu and Valentin, 1997;Valentin, 1995Valentin, , 2000Valentin et al, 2004).…”