Uses primate sequence data to test common ancestry using third codon-position usage
###Primate sequence data obtained from: Perelman, P., W. E. Johnson, C. Roos, H. N. Seuanez, J. E. Horvath, M. a M. Moreira, B. Kessing, J. Pontius, M. Roelke, Y. Rumpler, M. P. C. Schneider, A. Silva, S. J. O'Brien, and J. Pecon-Slattery. 2011. A molecular phylogeny of living primates. PLoS Genet. 7:e1001342.