Fig. 7. (A) Cross-sectional area and (B) cranio-caudal and medio-lateral second moments of area (I) of the radius at the midshaft plotted against body mass on logarithmic axes. Data for the small, intermediate and adult groups are represented by circles, squares and diamonds, respectively. Cranio-caudal (I_CC) and medio-lateral (I_ML) data are represented by filled and open symbols, respectively. In A, y=13.4x^0.53±0.07 (r²=0.92). In B, I_CC, y=26.6x^0.84±0.16 (r²=0.85); I_ML, y=52.3x^1.03±0.12 (r²=0.94). The broken lines represent isometry in each case (slope: A, 0.67; B, 1.33) and are positioned to facilitate comparison with the regression lines (solid lines).