Chelodina

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Chelodina Temporal range: Eocene–Recent PreꞒ Ꞓ O S D C P T J K Pg N

Australian snake-necked turtle (Chelodina longicollis)
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Reptilia
Order:	Testudines
Suborder:	Pleurodira
Family:	Chelidae
Subfamily:	Chelodininae
Genus:	Chelodina Fitzinger, 1826 ^[1]
Type species
Testudo longicollis Shaw, 1794

Chelodina, collectively known as snake-necked turtles, is a large and diverse genus of long-necked chelid turtles with a complicated nomenclatural history.^[2] 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,^[2] further Macrochelodina and Macrodiremys are now known to apply to the same species, hence Chelydera is used for the northern snake-necked turtles.^[3]

Chelodina is an ancient group of chelid turtles native to Australia, New Guinea, the Indonesian Rote Island, and East Timor. The turtles within this subgenus are small to medium-sized with oval shaped carapace. They are side-necked turtles, meaning they tuck their head partially around the side of their body when threatened instead of directly backwards.

Chelydera represents those species that have often been termed the Chelodina B group or thick necked snake neck turtles. The subgenus was described in 2020 by Thomson & Georges (in Shea et al. 2020). They are a side-neck turtle of the family Chelidae with extremely long necks and long flattened heads. They are specialist fish eaters using a strike and gape mode of feeding. They are medium to large species with the largest Chelodina (Chelydera) expansa reaching shell lengths of some 45 cm (18 in).^[4] The first fossils (C. (Chelydera) alanrixi) are known from Queensland from the Eocene period (Lapparent de Broin, F. de, & Molnar, R. E., 2001).^[5]

Macrochelodina (Wells & Wellington, 1985) is a monotypic subgenus of the Chelodina. Its sole member is the enigmatic Chelodina (Macrochelodina) oblonga from Western Australia.

Taxonomy

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Current taxonomy follows that of Georges & Thomson, 2010^[2] with updates from van Dijk et al. 2014^[6] and Shea et al. 2020.^[3]

Synonymous names for the Chelodina Fitzinger 1826 genus include: Hydraspis Bell 1828, Chelyodina Agassiz 1846:79 (nomen novum), Hesperochelodina Wells and Wellington 1985 (nomen nudum).

The type species for the Chelodina subgenus is Chelodina longicollis (Shaw, 1794). The type species for the Chelydera subgenus is Chelodina parkeri Rhodin and Mittermeier 1976. The type species for Macrochelodina is Chelodina oblonga Gray 1841.

List of species

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Common name	Scientific name^[a]	IUCN Red List Status^[6]
Subgenus: Chelodina Fitzinger, 1826
Cann's snake-necked turtle	Chelodina canni McCord & Thomson, 2002^[7]	LC
Gunalen's snake-necked turtle	Chelodina gunaleni McCord & Joseph-Ouni, 2007^[8]	DD
Aramia snake-necked turtle	Chelodina ipudinapi Joseph-Ouni, & McCord, 2022
Eastern long-necked turtle	Chelodina longicollis (Shaw, 1794)	LC
Roti Island snake-necked turtle McCord's snakeneck turtle	Chelodina mccordi Rhodin, 1994b^[9]	CR^IUCN
New Guinea snake-necked turtle	Chelodina novaeguineae Boulenger, 1888	LC^IUCN
Reimann's snake-necked turtle	Chelodina reimanni Philippen and Grossmann, 1990	NT^IUCN
Pritchard's snake-necked turtle	Chelodina pritchardi Rhodin, 1994a^[10]	EN^IUCN
Steindachner's long-necked turtle Dinner-plate turtle	Chelodina steindachneri Siebenrock, 1914	LC
Subgenus: Chelydera Thomson & Georges, 2020^[3]
Arnhem Land long-necked turtle	Chelodina burrungandjii Thomson, Kennett & Georges, 2000^[11]	LC
Giant snake-necked turtle	Chelodina expansa Gray, 1857	LC
Kuchling's snake-necked turtle	Chelodina kuchlingi Cann, 1997^[12]	NE
Darwin snake-necked turtle	Chelodina kurrichalpongo (Joseph-Ouni, McCord, Cann, & Smales, 2019)	NE
Parker's snake-necked turtle	Chelodina parkeri Rhodin and Mittermeier, 1976	VU^IUCN
Northern snake-necked turtle North Australian snake-necked turtle	Chelodina rugosa Ogilby, 1890^[13]	NT^IUCN
Kimberley long neck turtle	Chelodina walloyarrina	NE
Subgenus: Macrochelodina Wells & Wellington 1985
Southwestern snake-necked turtle Narrow-breasted snake-necked turtle Oblong turtle	Chelodina oblonga Gray, 1841^[14]	NT

Extinct species

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There are three identified extinct species of Chelodina:

†Chelodina alanrixi de Broin and Molnar, 2001^[5] is a species of snake-necked fossil turtle which was described in 2001 using material gathered in Redbank Plains, Queensland, Australia. It is a member of the Chelidae Pleurodira. The fossil has been dated to the Eocene Epoch.
†Chelodina insculpta de Vis, 1897^[15] is an extinct species of snake-necked turtle that was described in 1897 from material gathered in Darling Downs, Queensland, Australia, restricted.^[16] It is a member of the Chelidae; Pleurodira. The fossil has been dated as Pliocene to Pleistocene.
†Chelodina murrayi Yates, 2013^[17] is an extinct species of snake-necked turtle from the Waite Formation on the Alcoota Scientific Reserve,^[17] north-east of Alice Springs in the Northern Territory of Australia. The species would appear to belong to the Chelodina novaeguineae group of species within the subgenus Chelodina.

Notes

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^ A binomial authority in parentheses indicates the species was originally described in a genus other than Pelusios.

References

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^ Fitzinger LJFJ. 1826. Neue classification der reptilien nach ihren natürlichen verwandtschaften. Nebst einer verwandtschafts-tafel und einem verzeichnisse der reptilien-sammlung des K. K. zoologischen museum's zu Wien. J.G. Hübner, Wien. vii, 66 pp.
^ ^a ^b ^c Georges, A.; Thomson, S. (2010). "Diversity of Australasian freshwater turtles, with an annotated synonymy and keys to species". Zootaxa. 2496 (1): 1–37. doi:10.11646/zootaxa.2496.1.1.
^ ^a ^b ^c Shea, G., Thomson, S. & Georges, A. 2020. The identity of Chelodina oblonga Gray 1841 (Testudines: Chelidae) reassessed. Zootaxa 4779(3): 419–437. DOI: 10.11646/zootaxa.4779.3.9. PDF
^ Macrochelodina expansa (Grey, 1856) - Broad-Shelled Turtle Archived 2010-12-31 at the Wayback Machine
^ ^a ^b Lapparent de Broin, F. de; Molnar, R. E. (2001). "Eocene chelid turtles from Redbank Plains, Southeast Queensland, Australia" (PDF). Geodiversitas. 23 (1): 41–79. ISSN 1280-9659.
^ ^a ^b Turtle Taxonomy Working Group; [van Dijk, P.P.; Iverson, J.B.; Rhodin, A.G.J.; Shaffer, H.B.; Bour, R.] (2014). "Turtles of the World, 7th edition: annotated checklist of taxonomy, synonymy, distribution with maps, and conservation status". In Rhodin, A.G.J.; Pritchard, P.C.H.; van Dijk, P.P.; Saumure, R.A.; Buhlmann, K.A.; Iverson, J.B.; Mittermeier, R.A. (eds.). Conservation Biology of Freshwater Turtles and Tortoises: A Compilation Project of the IUCN/SSC Tortoise and Freshwater Turtle Specialist Group (PDF). Chelonian Research Monographs. Vol. 7. IUCN/SSC Tortoise and Freshwater Turtle Specialist Group. doi:10.3854/crm.5.000.checklist.v7.2014.
^ McCord, W. P.; Thomson, S. A. (2002). "A New Species of Chelodina (Testudines: Pleurodira: Chelidae) from Northern Australia" (PDF). Journal of Herpetology. 36 (2): 255–267. doi:10.1670/0022-1511(2002)036[0255:ANSOCT]2.0.CO;2.
^ Chelodina gunaleni, The Reptile Database
^ Rhodin, Anders G.J. (1994b). Chelid turtles of the Australasian Archipelago: II. A new species of Chelodina from Roti Island, Indonesia. Breviora 498:1–31.PDF
^ Rhodin, Anders G.J. (1994a). Chelid turtles of the Australasian Archipelago: I. A new species of Chelodina from southeastern Papua New Guinea. Breviora 497:1–36. PDF
^ Thomson S., Kennett R. and Georges A. (2000). A new species of long necked turtle (Chelidae:Chelodina) from the sandstone plateau of Arnhem Land, Northern Australia. Chelonian Conservation and Biology 3:675-685.
^ Cann, John (1997d). Kuchling's turtle. Monitor (Journal of the Victorian Herpetological Society) 9(1):41–44,32.
^ Ogilby, J.D. 1890. Description of a new Australian tortoise. Rec. Austral. Mus. 1: 56-59
^ Gray, John Edward (1841). Gray, J.E., (1841) A Catalogue of the Species of Reptiles and Amphibia hitherto described as inhabiting Australia, with a description of some New Species from Western Australia, and some remarks on their geographical distribution. In: Grey, G. Journals of Two Expeditions of Discovery in North-west and Western Australia, during the years 1837, 38, and 39, Under the Authority of Her Majesty's Government. Vol. 2. T. and W. Boone, London, 28 pp., 8 pls. [pp. 422–449, pls. 1–8]
^ de Vis, C.W. (1897). The extinct freshwater turtles of Queensland. Annals of the Queensland Museum 3: 3-7.
^ Thomson, S. A. 2000. A Revision of the Fossil Chelid Turtles (Pleurodira) Described by C.W. De Vis, 1897. Memoirs of the Queensland Museum 45(2):593-598.
^ ^a ^b Yates, Adam M. (2013). "A new species of long-necked turtle (Pleurodira: Chelidae: Chelodina) from the late Miocene Alcoota Local Fauna, Northern Territory, Australia". PeerJ. 1: e170. doi:10.7717/peerj.170. PMC 3796373. PMID 24133635.

External links

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Wikimedia Commons has media related to Chelodina.

Overview of the genus Chelodina with original literature

Side-necked turtle species

Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Subclass: Anapsida
Order: Testudines
Suborder: Pleurodira

Acanthochelys

	Acanthochelys macrocephala Acanthochelys pallidipectoris Acanthochelys radiolata Acanthochelys spixii

Chelus

	Chelus fimbriata Chelus orinocensis †Chelus colombiana

Mesoclemmys

	Mesoclemmys dahli Mesoclemmys gibba Mesoclemmys jurutiensis Mesoclemmys nasuta Mesoclemmys perplexa Mesoclemmys raniceps Mesoclemmys sabiniparaensis Mesoclemmys tuberculata Mesoclemmys vanderhaegei †Mesoclemmys vanegasorum Mesoclemmys zuliae

Phrynops

	Phrynops geoffroanus Phrynops hilarii †Phrynops paranaensis Phrynops tuberosus Phrynops williamsi

Platemys

	Platemys platycephala

Ranacephala

	Ranacephala hogei

Rhinemys

	Rhinemys rufipes

Chelodininae

Chelodina

Chelodina	Chelodina canni Chelodina gunaleni Chelodina longicollis Chelodina mccordi †Chelodina murrayi Chelodina novaeguineae Chelodina pritchardi Chelodina reimanni Chelodina steindachneri
Chelydera	†Chelodina alanrixi Chelodina burrungandjii Chelodina expansa Chelodina insculpta Chelodina kuchlingi Chelodina kurrichalpongo Chelodina parkeri Chelodina rugosa Chelodina walloyarrina
Macrochelodina	Chelodina oblonga

Elseya

Elseya	Elseya dentata Elseya branderhorsti Elseya flaviventralis
Pelocomastes	Elseya albagula Elseya irwini Elseya lavarackorum †Elseya nadibajagu †Elseya uberrima
Hanwarachelys	Elseya caelatus Elseya novaeguineae Elseya orestiad Elseya rhodini Elseya schultzei

Elusor

	Elusor macrurus

Emydura

	Emydura australis Emydura gunaleni Emydura macquarii Emydura subglobosa Emydura tanybaraga Emydura victoriae

Myuchelys

	Myuchelys belli Myuchelys georgesi Myuchelys latisternum Myuchelys purvisi

Rheodytes

	Rheodytes leukops †Rheodytes devisi

Hydromedusinae

Hydromedusa

	Hydromedusa maximiliani Hydromedusa tectifera

Pseudemydurinae

Pseudemydura

	Pseudemydura umbrina

Pelomedusidae

Pelomedusa

	Pelomedusa subrufa

Pelusios

	Pelusios adansonii Pelusios bechuanicus Pelusios broadleyi Pelusios carinatus Pelusios castaneus Pelusios castanoides Pelusios chapini Pelusios cupulatta Pelusios gabonensis Pelusios marani Pelusios nanus Pelusios niger Pelusios rhodesianus Pelusios sinuatus Pelusios subniger Pelusios upembae Pelusios williamsi

Podocnemididae

Erymnochelys

	Erymnochelys madagascariensis

Peltocephalus

	Peltocephalus dumerilianus

Podocnemis

	Podocnemis erythrocephala Podocnemis expansa Podocnemis lewyana Podocnemis sextuberculata Podocnemis unifilis Podocnemis vogli

Phylogenetic arrangement of turtles based on Turtles of the World 2021 Update: Annotated Checklist and Atlas of Taxonomy, Synonymy, Distribution, and Conservation Status. Key: †=extinct.

Testudines

Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Clade: Diapsida
Order: Testudines

Genus

Chelonioidea
(Sea turtles)

Cheloniidae	†Allopleuron Caretta †Carolinochelys Chelonia †Eochelone Eretmochelys †Gigantatypus †Glarichelys †Itilochelys Lepidochelys †Mexichelys †Miocaretta Natator †Pacifichelys †Syllomus †Tasbacka
Dermochelyidae	†Arabemys †Corsochelys †Cosmochelys Dermochelys †Eosphargis †Mesodermochelys †Psephophorus
	†Euclastes †Peritresius †Procolpochelys †Protosphargis †Puppigerus

Kinosternoidea

Dermatemydidae	Dermatemys
Kinosternidae	Claudius †Hoplochelys Kinosternon Staurotypus Sternotherus

Testudinoidea

Emydidae	†Acherontemys Chrysemys Clemmys Deirochelys Emys Actinemys Emydoidea Glyptemys Graptemys Malaclemys Pseudemys Terrapene Trachemys †Wilburemys
Geoemydidae	Batagur †Banhxeochelys Cuora Cyclemys Geoclemys Geoemyda Hardella Heosemys Leucocephalon Malayemys Mauremys Melanochelys Morenia Notochelys Orlitia Pangshura Rhinoclemmys Sacalia Siebenrockiella Vijayachelys
Platysternidae	Platysternon
Testudinidae	Aldabrachelys Astrochelys Centrochelys Chelonoidis Chersina Cylindraspis †Cymatholcus †Floridemys Geochelone Gopherus †Hadrianus †Hesperotestudo Homopus Indotestudo Kinixys Malacochersus Manouria †Megalochelys †Oligopherus Psammobates Pyxis †Solitudo Stigmochelys †Stylemys Testudo

Trionychia

Carettochelyidae	†Allaeochelys †Anosteira Carettochelys
Trionychidae	Amyda Apalone †Axestemys Chitra Cyclanorbis Cycloderma †Drazinderetes Dogania †Gilmoremys †Hutchemys †Khunnuchelys Lissemys Nilssonia Palea †Palaeoamyda Pelochelys Pelodiscus Rafetus Trionyx
	†Basilochelys †Sinaspideretes

Chelydridae	Chelydra †Chelydrops †Chelydropsis †Emarginachelys †Macrocephalochelys Macrochelys †Planiplastron †Protochelydra
†Nanhsiungchelyidae	†Anomalochelys †Basilemys †Jiangxichelys
†Protostegidae	†Alienochelys †Archelon †Atlantochelys †Bouliachelys †Calcarichelys †Cratochelone †Desmatochelys †Iserosaurus †Notochelone †Ocepechelon †Pneumatoarthrus †Protostega †Rhinochelys †Santanachelys †Terlinguachelys
	†Adocus †Argillochelys †Bashuchelys †Ctenochelys †Prionochelys †Toxochelys

Pleurodira

†Araripemydidae	†Araripemys
†Bothremydidae	†Araiochelys †Arenila †Azabbaremys †Bothremys †Cearachelys †Chedighaii †Chupacabrachelys †Eotaphrosphys †Foxemys †Galianemys †Ilatardia †Inaechelys †Itapecuruemys †Jainemys †Kinkonychelys †Kurmademys †Labrostochelys †Nigeremys †Phosphatochelys †Polysternon †Puentemys †Rosasia †Rhothonemys †Sankuchemys †Taphrosphys †Ummulisani †Zolhafah
Chelidae	Acanthochelys Chelodina Chelus Elseya Elusor Emydura Hydromedusa †Lomalatachelys Mesoclemmys Myuchelys Phrynops Platemys †Prochelidella Pseudemydura Rheodytes Rhinemys †Yaminuechelys
Pelomedusidae	Pelomedusa Pelusios
Podocnemididae	†Albertwoodemys †Bauruemys †Brontochelys †Caninemys †Carbonemys †Cerrejonemys †Cordichelys Erymnochelys †Lapparentemys †Latentemys Peltocephalus Podocnemis †Stupendemys
†Sahonachelyidae	†Sahonachelys †Sokatra

	†Caribemys †Caririemys †Tacuarembemys

Phylogenetic arrangement of turtles based on Turtles of the World 2017 Update: Annotated Checklist and Atlas of Taxonomy, Synonymy, Distribution, and Conservation Status. † = extinct.

See also List of Testudines families

Taxon identifiers
Chelodina	Wikidata: Q532358 Wikispecies: Chelodina AFD: Chelodina;CHELIDAE BOLD: 171555 CoL: 3MNS EoL: 14338 GBIF: 2441953 iNaturalist: 39589 IRMNG: 1424067 ITIS: 208715 NCBI: 44490 Open Tree of Life: 235768 uBio: 210453 WoRMS: 1447989

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