Order Testudines Wagler, 1830 - turtles Suborder Pleurodira Cope, 1864 Family Chelidae Gray, 1825 Subfamily Chelodininae Baur, 1893 Genus Chelodina Fitzinger, 1826 Subgenus Chelodina (Macrochelodina) Wells & Wellington, 1985 Chelodina (Macrochelodina) oblonga Gray, 1841 - northern snake-necked turtle