Fig. 3From: Postcranial heterochrony, modularity, integration and disparity in the prenatal ossification in bats (Chiroptera)Principal Component Analysis of of the ossification sequences of 24 postcranial bones (relative ranks from 0 to 1) in 39 vertebrate species analysed in this study. Species are plotted across PC1 (49.47%) and PC2 (17.86%), and are grouped as Aves (red), Chiroptera (green), and non-volant mammals (blue)Back to article page