Chelidae — Side-necked Freshwater Turtles
Species I've seen:
Chelodina — Long-necked Turtles
Chelodina colliei
Oblong Turtle
Emydura — Australian River Turtles
Emydura subglobosa
Jardine River Turtle
Wollumbinia — Helmeted Turtles
Wollumbinia latisternum
Saw-shelled Turtle