The authors would like to correct two errors published in J. Exp. Biol.211, 1187-1202.
First, in three places in the article, the reported value of yield stress in torsion for the femur of Pseudemys concinna was too high by a factor of 2. This error occurred in Table 5, in the second paragraph of the Results section entitled`Mechanical properties and safety factor calculations'(p. 1196) and in the first paragraph of the Discussion section entitled `Femoral safety factors in turtles: mechanical basis and implications for the evolution of limb bone design' (p. 1199). The correct value is 39.1±3.3 MPa, which is 35% lower than values for bovine and human bone (Currey, 2002),rather than 40% higher as reported (p. 1196 and p. 1199). All calculations of in vivo bending and shear stress and of safety factors in bending were unaffected...
