Genus: Chelodina Fitzinger 1826: 6

Type species: Testudo longicollis Shaw 1794; subsequent designation by Duméril & Bibron (1835: 442).

Revised Diagnosis: Medium to large freshwater turtles with exceptionally long necks; head and neck, when extended, typically of similar length to, or longer than, the carapace; gular scutes meet in front of intergular scute, or if not, barely separated by intergular (common variant in C. burrungandjii); skull anteriorly elongated; frontal bones fused into a single unit; parietal arch absent; atlas elements (intercentrum, centrum, lamina) fused into a single unit; four claws on front and back feet.