Chelydridae

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Family of turtles

Chelydridae Temporal range: 70.6–0 Ma PreꞒ Ꞓ O S D C P T J K Pg N Late Cretaceous[1] to Recent
The common snapping turtle (Chelydra serpentina) a species of Chelydridae
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Reptilia
Order:	Testudines
Suborder:	Cryptodira
Clade:	Americhelydia
Family:	Chelydridae Gray, 1831[2]
Genera
Chelydra Macrochelys †Acherontemys †Chelydrops †Chelydropsis †Emarginachelys †Macrocephalochelys †Planiplastron †Protochelydra
Synonyms[3]
Chelydrae Gray, 1831:4[2] Chelydridae Swainson, 1839:113[4] Chelydradae Gray, 1869:178[5]

The Chelydridae is a family of turtles that has seven extinct and two extant genera. The extant genera are the snapping turtles, Chelydra and Macrochelys. Both are endemic to the Western Hemisphere. The extinct genera are Acherontemys, Chelydrops, Chelydropsis, Emarginachelys, Macrocephalochelys, Planiplastron, and Protochelydra.

Fossil history[edit]

The Chelydridae have a long fossil history, with extinct species reported from North America as well as all over Asia and Europe, far outside their present range. The earliest described chelydrid is Emarginachelys cretacea, known from well-preserved fossils from the Maastrichtian stage of the Late Cretaceous of Montana.^[1] Another well-preserved fossil chelydrid is the Late Paleocene Protochelydra zangerli from North Dakota.^[6] The carapace of P. zangerli is higher-domed than that of the recent Chelydra, a trait conjectured to be associated with the coexistence of large, turtle-eating crocodilians. Another genus, Chelydropsis, contains several well-known Eurasian chelydrid species that existed from the Oligocene to the Pliocene.^[7] In South America, chelydrids (C. acutirostris) only occupy the northwestern corner of the continent, reflecting their recent arrival from Central America as part of the Great American Interchange.

Gallery[edit]

• 

  Chelydropsis murchisoni fossil remains: left: juvenile, right: adult

• 

  Common snapping turtle at Taum Sauk Mountain State Park

• 

  Two-year-old captive-raised snapping turtle from Pennsylvania

• 

  Female next to can to show size

• 

  Skeleton of alligator snapping turtle at the Museum of Osteology

References[edit]

1. ^ ^{a b} Emarginachelys cretacea, Paleobiology Database
2. ^ ^{a b} Gray, John Edward. (1831). Synopsis Reptilium; or Short Descriptions of the Species of Reptiles. Part I.—Cataphracta. Tortoises, Crocodiles, and Enaliosaurians. London: Treuttel, Wurz, and Co., 85 pp. [Published May 1831].
3. ^ Turtle Taxonomy Working Group [van Dijk, P.P., Iverson, J.B., Shaffer, H.B., Bour, R., and Rhodin, A.G.J.]. (2012). Turtles of the World, 2012 update: annotated checklist of taxonomy, synonymy, distribution, and conservation status. Chelonian Research Monographs No. 5, pp. 000.243–000.328, doi:10.3854/crm.5.000.checklist.v5.2012, "Archived copy" (PDF). Archived from the original (PDF) on 2013-06-16. Retrieved 2014-04-19.{{cite web}}: CS1 maint: archived copy as title (link)
4. ^ Swainson, William. (1839). On the natural history and classification of fishes, amphibians, and reptiles. Vol. II. In: Lardner, D. (Ed.). The Cabinet Cyclopaedia. Natural History. London: Longman, 452 pp.
5. ^ Gray, John Edward. (1869). Notes on the families and genera of tortoises (Testudinata), and on the characters afforded by the study of their skulls. Proceedings of the Zoological Society of London 1869:165–225.
6. ^ Danilov G. and J. F. Parham. (2008). A reassessment of some poorly known turtles from the Middle Jurassic of China, with comments on the antiquity of extant turtles. Journal of Vertebrate Paleontology 28(2):306-318
7. ^ Böhme, M. (2008). Ectothermic vertebrates (Teleostei, Allocaudata, Urodela, Anura, Testudines, Choristodera, Crocodylia, Squamata) from the Upper Oligocene of Oberleichtersbach (Northern Bavaria, Germany). Courier Forschungsinstitut Senckenberg 260:161-183

• de Broin, F. (1969). Contribution a l'etude des cheloniens. Cheloniens continentaux du Cretace Superieur et du Tertiaire de France. Memoires du Muséum National d'Histoire Naturelle. Vol. C, No. XXVIII.
• Ericson, B.R. (1973). A new chelydrid turtle (Protochelydra zangerli), from the late Paleocene of North Dakota. Scientific Publications of the Science Museum of Minnesota, New Series. 2(2):1-16.
• Gaffney, E.S. (1975). Phylogeny of the chelydrid turtles: a study of shared derived characters in the skull. Fieldiana Geology 33:157-178.
• Parham, J.F., C.R. Feldman, and J.R. Boore (2006). The complete mitochondrial genome of the enigmatic bigheaded turtle (Platysternon): description of unusual genomic features and the reconciliation of phylogenetic hypotheses based on mitochondrial and nuclear DNA. BMC Evol Biol. 6: 11. Published online February 7, 2006. doi:10.1186/1471-2148-6-11.
• Whetstone, K.N. (1978). A new genus of cryptodiran turtles (Testudinoidea, Chelydridae) from the Upper Cretaceous Hell Creek Formation of Montana. The University of Kansas Science Bulletin 51(17):539-563.

v t e Turtle family Chelydridae
Kingdom: Animalia Phylum: Chordata Class: Reptilia Order: Testudines Suborder: Cryptodira Family: Chelydridae
Genus	Species of the family Chelydridae
Chelydra	Central American snapping turtle Common snapping turtle South American snapping turtle †Chelydra floridana †Chelydra laticarinata †Chelydra sculpta
†Chelydrops	†Chelydrops stricta
†Chelydropsis	†Chelydropsis decheni †Chelydropsis kusnetzovi †Chelydropsis murchisoni
†Emarginachelys	†Emarginachelys cretacea
†Macrocephalochelys	†Macrocephalochelys pontica
Macrochelys	Alligator snapping turtle (synonymized: Apalachicola snapping turtle) Suwannee snapping turtle
†Planiplastron
†Protochelydra	†Protochelydra zangerli
Phylogenetic arrangement of turtles based on turtles of the world 2017 update: Annotated checklist and atlas of taxonomy, synonymy, distribution, and conservation status. †=Extinct.

v t e Testudines
Kingdom: Animalia Phylum: Chordata Class: Reptilia Subclass: Anapsida Order: Testudines
Suborder	Superfamily Family Genus
Cryptodira	Chelonioidea (Sea turtles) Cheloniidae †Allopleuron Caretta †Carolinochelys Chelonia †Eochelone Eretmochelys †Gigantatypus †Glarichelys †Itilochelys Lepidochelys †Mexichelys †Miocaretta Natator †Pacifichelys †Syllomus †Tasbacka Dermochelyidae †Arabemys †Bouliachelys †Corsochelys †Cosmochelys Dermochelys †Eosphargis †Mesodermochelys †Psephophorus   †Alienochelys †Berruchelus †Euclastes †Peritresius †Procolpochelys †Protosphargis †Puppigerus Kinosternoidea Dermatemydidae Dermatemys Kinosternidae Claudius †Hoplochelys Kinosternon Staurotypus Sternotherus Testudinoidea Emydidae Chrysemys Clemmys Deirochelys Emys Actinemys Emydoidea Glyptemys Graptemys Malaclemys Pseudemys Terrapene Trachemys Geoemydidae Batagur †Banhxeochelys Cuora Cyclemys Geoclemys Geoemyda Hardella Heosemys Leucocephalon Malayemys Mauremys Melanochelys Morenia Notochelys Orlitia Pangshura Rhinoclemmys Sacalia Siebenrockiella Vijayachelys  Platysternidae Platysternon Tortoises Aldabrachelys Astrochelys Centrochelys Chelonoidis Chersina Cylindraspis Geochelone Gopherus †Hadrianus †Hesperotestudo Homopus Indotestudo Kinixys Malacochersus Manouria †Megalochelys Psammobates Pyxis Stigmochelys †Stylemys Testudo Trionychia Carettochelyidae †Allaeochelys †Anosteira Carettochelys Trionychidae Amyda Apalone †Axestemys Chitra Cyclanorbis Cycloderma Dogania †Gilmoremys †Hutchemys †Khunnuchelys Lissemys Nilssonia Palea †Palaeoamyda Pelochelys Pelodiscus Rafetus Trionyx   †Basilochelys †Sinaspideretes †Baenoidea †Baenidae †Arvinachelys †Baena †Cedrobaena †Chisternon †Denazinemys †Gamerabaena †Neurankylus †Palatobaena †Peckemys †Plesiobaena †Pleurosternidae †Dinochelys †Dorsetochelys †Glyptops †Pleurosternon †Selenemys   Chelydridae †Acherontemys Chelydra †Chelydrops †Chelydropsis †Emarginachelys †Macrocephalochelys Macrochelys †Planiplastron †Protochelydra †Eurysternidae †Achelonia †Chelonides †Eurysternum †Hydropelta †Idiochelys †Palaeomedusa †Parachelys †Macrobaenidae †Anatolemys †Aurorachelys †Kirgizemys †Osteopygis †Yakemys †Nanhsiungchelyidae †Anomalochelys †Basilemys †Jiangxichelys †Protostegidae †Archelon †Atlantochelys †Atlantochelys †Calcarichelys †Cratochelone †Desmatochelys †Iserosaurus †Notochelone †Ocepechelon †Pneumatoarthrus †Protostega †Rhinochelys †Santanachelys †Terlinguachelys †Sinemydidae †Jeholochelys †Liaochelys †Manchurochelys †Ordosemys †Sinemys †Thalassemydidae †Neusticemys †Palaeomedusa †Thalassemys   †Adocus †Angolachelys †Argillochelys †Bashuchelys †Brodiechelys †Ctenochelys †Compsemys †Hoyasemys †Larachelus †Leyvachelys †Plesiochelys †Toxochelys †Uluops †Xinjiangchelys
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 †Chubutemys †Hispaniachelys †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	Wikidata: Q650212 Wikispecies: Chelydridae ADW: Chelydridae BOLD: 34463 EoL: 8124 EPPO: 1KHELF Fossilworks: 37704 GBIF: 5462 iNaturalist: 39680 IRMNG: 114441 ITIS: 173750 NBN: NHMSYS0000080222 NCBI: 8473 WoRMS: 1026087

Retrieved from "https://en.wikipedia.org/w/index.php?title=Chelydridae&oldid=1076137425"

Categories:

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• Taxa named by John Edward Gray
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