Splits graph obtained using split decomposition analysis of whole mitochondrial genomes. The GTR+I+G model of nucleotide substitution was assumed, using maximum-likelihood estimates of model parameters. A very similar graph was obtained using LogDet-transformed distances, but is not shown here.
Willerslev et al. BMC Evolutionary Biology 2009 9:95 doi:10.1186/1471-2148-9-95