ML phylogeny generated by analysis of a concatenated data set of 3,999 genes, partitioned by gene. All nodes were recovered with bootstrap support of 100%. The identical topology was recovered by analysis of the same data set partitioned by gene and codon position (first + second and third position). Bayesian analyses of the 172 most informative gene partitions (60,783 amino acids), recovered the same topology with the exception of the relationship among the three Cryptomys hottentotus subspecies, all nodes received a BPP support of 1.00 unless otherwise shown. Line drawings represent each mole-rat species included in the study; images are scaled to represent relative body sizes (also see table 1for values). Outgroup taxa are represented by colored clades as follows: green, Hominidae, Hylobatidae, and Galagidae; orange, Ochotona princeps and Oryctolagus cuniculus; yellow, Muridae, Spalacidae, and Heteromyidae.