[3] Chelodina is an ancient group of chelid turtles native to Australia, New Guinea, the Indonesian Rote Island, and East Timor.

They are side-necked turtles, meaning they tuck their head partially around the side of their body when threatened instead of directly backwards.

They are medium to large species with the largest Chelodina (Chelydera) expansa reaching shell lengths of some 45 cm (18 in).

Its sole member is the enigmatic Chelodina (Macrochelodina) oblonga from Western Australia.

The type species for the Chelydera subgenus is Chelodina parkeri Rhodin and Mittermeier 1976.