Figure 7. Thin plate spline representations of uniform (left) and non-uniform (right) transformations. Landmarks are: 1 - umbo, 2 - ventral end of lunule, 3 - ventral end of anterior cardinal tooth, 4 - ventral end of posterior cardinal tooth, 5 - dorsal end of anterior adductor muscle scar, 6 - dorsal end of posterior adductor muscle scar, 7 - ventral end of escutcheon. Baseline comprises the intersection of the posterior adductor muscle scar and pallial line (0,0), and the ventral intersection of the adductor muscle scar and pallial line (1,0).