FIGURE 9. Mesowear data of the lower molars m2 and m1. Data obtained from the visual analysis, 1. facets analysed separately: 0=no facets, 1=one facet, 2=two facets, 3=three facets, 4=four facets, 2. only presence of facet analysed: 0=no facet, 1=at least one facet.