Figure 1.

Analysis of the elbow joint in M. trumani and other felids. (a) Landmarks digitized to capture the three-dimensional shape of the elbow joint. The elbow of M. trumani (mirrored) as an example. From top to bottom: anterior, posterior and inferior (distal) views. (b) Bivariate graph depicted from the first two eigenvectors obtained from PCA; (c) shape changes accounted for by the first two eigenvectors. (d) Bivariate graph depicted from the first two eigenvectors obtained from PCA for the restricted sample of M. trumani, P. concolor and A. jubatus, where ‘c’ is the centroid. The convex hulls are defined according to the results obtained from K-means analysis—i.e. K-means analysis classified M. trumani with Puma and not with Acinonyx. Ccar, Caracal caracal; Lser, Leptailurus serval; Lwie, Leopardus wideii; Nneb, Neofelis nebulosa; Pleo, Panthera leo; Ponc, Panthera onca; Pviv, Prionailurus viverrinus. Silhouettes are not to scale.