Figure 11. A in Functional morphology and light-gathering ability of podocopid ostracod eyes and the palaeontological implications

Figure 11. A, the relationship between the relative valve thickness (Tv) and the relative thickness of the lens (E1): r, correlation coefficient; P, significance level of the correlation. B, plots of the standardized curvature of the outer lens surface (R1) against the relative height of the ridge (Hr).