Results obtained in the regression analyses.

These regressions were computed from shape (Pco), maximum running speed (log-MRS) and daily movement distance (log-DMD) on size (log-Cs) for each forelimb bone, as well as, the multivariate regression analyses of shape (residuals from the previous regressions) on log-MRS and log-DMD (or their size-free residuals if it was appropriate). The multivariate regression analyses of log-MRS and log-DMD were performed with a restricted dataset according with the availability of data for living species in the literature (see Table S1). Results obtained when phylogenetic independent contrast (PIC) was applied for shape, size, MRS and DMD are also shown. Numbers indicate p-values. The percentages of each limb bone shape, log-MRS or log-DMD explained by the differences in the independent variable are given between brackets.