Various estimates for the depth of excavation d_e are in the literature. Based on stratigraphic considerations, at Barringer Crater (Shoemaker, 1963), where D is the final rim diameter. The maximum d_e of material in the ballistic ejecta deposits of the Haughton and Ries structures is 0.035D_a (Osinski et al., 2011), where D_a is the apparent crater diameter. If the final rim diameter D is used, which is the parameter measured in planetary craters, a value 0.05D is obtained for Haughton. No other data are available for d_e in terrestrial complex impact craters.