Bayesian phylogeny of mtDNA sequences of Trachemys (12S, ND4L, ND4, cyt b plus adjacent tRNA-Thr sequences; 3226 bp). Support values at nodes are posterior probabilities and thorough bootstrap values from an ML tree with the same topology. Asterisks indicate maximum support under both approaches. (1) and (2) denote the clades within T. v. venusta s. l. mentioned in the text; A–C, the three clades within Trachemys. Note the samples D 39071 and D 39077 from Acapulco de Juárez (Guerrero) outside of these clades.