Chelodina (Macrochelodina) Expansa, commonly known as the broad-shelled river turtle or the broad-shelled snake-necked turtle, is a pleurodire freshwater turtle and is the biggest of the long-necked turtles. The broad-shelled river turtle is one of the oldest maturing and longest living species of freshwater turtles in existence and occurs in wide sympatry with Emydura macquarii and Chelodina longicollis. C. expansa is listed as ‘vulnerable’