Distribution ranges of Chelodina species (subgenus Chelydera), Chelodina oblonga (subgenus Macrochelodina), and C. canni, one of the species of the subgenus Chelodina sensu stricto hybridizing with Chelydera species. Distribution ranges according to TTWG 2021; the range of C. walloyarrina has been expanded using unpublished data (G. Kuchling). Note overlapping ranges. The grey areas correspond to the exposed continental shelf during the glacial sea level approximately 12,000 to 11,000 years ago. Abbreviations: LB – Lake Bonaparte, LC – Lake Carpentaria.