Order Testudines Wagler, 1830 - turtles
   Suborder Pleurodira Cope, 1864
     Family Chelidae Gray, 1825
       Subfamily Chelodininae Baur, 1893
         Genus Chelodina Fitzinger, 1826
           Subgenus Chelodina (Macrodiremys) McCord & Joseph-Ouni, 2007
             Chelodina (Macrodiremys) colliei Gray, 1856 - southwestern snake-necked turtle