Chelodina, collectively known as snake-necked turtles, is a large and diverse genus of long-necked chelid turtles with a complicated nomenclatural history. Although in the past, Macrochelodina and Macrodiremys have been considered separate genera and prior to that all the same, they are now considered subgenera of the Chelodina, further Macrochelodina and Macrodiremys are now known to apply to the same species, hence Chelydera is used for the northern snake-necked turtles.
The Chaco side-necked turtle or Chaco sideneck turtle is a species of turtle in the family Chelidae. It is found in Argentina, Paraguay, and possibly Bolivia. Its natural habitat is subtropical or tropical moist montane forests. The turtle possesses long horny spurs on its upper thighs. It is 18 cm in shell length. Like other members of its genus, the turtle buries itself in the mud when the streams run dry, a behaviour possibly parallel to the winter hibernating behaviours of turtles further north.
The Brazilian radiolated swamp turtle is a species of turtle in the Chelidae family endemic to Brazil.
The New Guinea snake-necked turtle is a species of turtle in the family Chelidae. The species is found almost exclusively within Western Province, Papua New Guinea.
Parker's snake-necked turtle is a species of turtle in the family Chelidae.
Pritchard's snake-necked turtle is a species of turtles in the family Chelidae. The species is endemic to a restricted area of Central Province, Papua New Guinea.
Reimann's snake-necked turtle is a species of turtle in the family Chelidae. The species is endemic to Oceania and Southeast Asia.
Elseya is a genus of large side-necked turtles, commonly known as Australian snapping turtles, in the family Chelidae. Species in the genus Elseya are found in river systems in northern and northeastern Australia and throughout the river systems of New Guinea. They are identified by the presence of alveolar ridges on the triturating surfaces of the mouth and the presence of a complex bridge strut.
The Western New Guinea stream turtle or New Guinea snapping turtle is a species of freshwater turtle in the Chelidae family. It is found in the Bird's Head Peninsula and the Bomberai Peninsula west of Cenderawasih Bay, and on the island of Waigeo of West Papua, Indonesia.
Emydura, the Australian short-necked turtles, are a genus of turtles in the family Chelidae. It was paraphyletic with Elseya. Consequently, it was split into two genera Myuchelys and Elseya by Thomson & Georges, 2009. They can grow quite large, 30 cm or more is not unusual and have a life span of around 20–30 years. They generally do not hibernate as their warmer climate lets them remain active all year round; they also spend more time in the water than other varieties. They are considered omnivore but rely on a constant supply of meat to remain healthy, feeding on basically anything that will fit into their mouth.
Dahl's toad-headed turtle is a medium-sized species of side-necked turtle in the family Chelidae. This critically endangered freshwater turtle is endemic to northern Colombia, where it lives in small pools, streams, and swamps, but aestivates on land.
The six-tubercled Amazon River turtle or six-tubercled river turtle is a species of turtle in the family Podocnemididae.
Chelodina canni, also known commonly as Cann's snake-necked turtle, is a species of turtle in the family Chelidae. The species is endemic to Australia, where it is found in the northern and northeastern parts of the continent. It has a narrow zone of hybridization with its related species the eastern snake-necked turtle, C. longicollis. For many years C. canni was assumed to be the same species as C. novaeguineae from New Guinea. However, in 2002 it was shown that these two species differ both morphologically and genetically, and therefore C. canni was separated and described as a unique species.
Mesoclemmys is a South American genus of turtle in the Chelidae family.
Elseya dentata, the northern snapping turtle, is a large aquatic turtle found throughout many rivers in northern Western Australia and the Northern Territory. It is one of three species in the nominate subgenus Elseya.
Chelodina (Chelydera) burrungandjii, the sandstone snake-necked turtle or Arnhem Land long-necked turtle, is a medium-sized turtle reaching carapace lengths of 316 mm. The species is found in the sandstone plateaus and escarpments and the plunge pools of Arnhem Land of the Northern Territory. The species had been long recognised as valid. However, it had been difficult to research due to the remoteness of its habitat. Efforts to breed this species in captivity had been largely unsuccessful, until National Aquarium Herpetologist Matthew Benedict lead a successful breeding project in 2021. The species occurs in proximity to Chelodina rugosa, to which it is closely related. For the most part the two species are parapatric in distribution. However, they do come together in limited locations such as plunge pools at the base of the escarpments. In these areas there is hybridization between the species.
Elseya schultzei, commonly known as Schultze's snapping turtle, is a species of chelid turtle endemic to northern New Guinea.
Chelodina (Chelydera) kuchlingi, commonly known as Kuchling's long-necked turtle or Kuchling's turtle, is a species of freshwater turtle in the family Chelidae. The species is endemic to Australia.
Chelodina (Chelydera) walloyarrina, the Kimberley long neck turtle or Kimberley snake-necked turtle, is a large species of long neck turtle endemic to the Kimberley region of Western Australia. In recent years, it has been unclear as to whether this was a valid species or not. It has been recognised as such by the 2017 and 2021 editions of the Turtle Checklist. In a recent paper it waslisted as a subspecies of Chelodina burrungandjii by Kehlmaier et al. 2019, however, that publication did not actually assess the type of the species nore did it analyse it. Hence it should be considered a full species.
Chelodina gunaleni, also known commonly as Gunalen's long-necked turtle and Gunalen's snake-necked turtle, is a species of turtle in the family Chelidae. The species is endemic to the lowlands of west-central West Papua, Indonesia, south of the central ranges.
