The family Carettochelyidae, commonly known as pig-nosed turtles, belongs to the order Testudines. This family is unique among freshwater turtles due to its distinctive flipper-like forelimbs, similar to those of sea turtles, and a fleshy, pig-like snout used for breathing while submerged. Carettochelyids are large, primarily aquatic turtles found in northern Australia and southern New Guinea, inhabiting rivers, lagoons, and estuaries. They are omnivorous, feeding on a mix of plant material and small animals, and are known for their relatively slow reproductive rate and long lifespan. As the sole surviving family in their superfamily, they represent a highly specialized and ancient lineage of turtles with both ecological and evolutionary significance.