Outgroup
Trachemys_adiutrix
Trachemys_brasiliensis
Trachemys_decorata
Trachemys_terrapen
Trachemys_dorbigni
Trachemys_emolli
Trachemys_cataspila
Trachemys_ornata
Trachemys_yaquia
Trachemys_hartwegi
Trachemys_taylori
Trachemys_gaigeae
Trachemys_angusta
Trachemys_decussata
Trachemys_chichiriviche
Trachemys_callirostris
Trachemys_grayi
Trachemys_venusta
Trachemys_hiltoni
Trachemys_nebulosa
Trachemys_malonei
Trachemys_vicina
Trachemys_stejnegeri
Trachemys_troostii
Trachemys_scripta
Trachemys_elegans