Hydromedusa References

Hydromedusa Temporal range: Paleocene-Recent ~62–0 Ma PreꞒ Ꞓ O S D C P T J K Pg N

Argentine snake-necked turtle, Hydromedusa tectifera
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Reptilia
Order:	Testudines
Suborder:	Pleurodira
Family:	Chelidae
Subfamily:	Hydromedusinae
Genus:	Hydromedusa Wagler 1830
Species
† H. casamayorensis De la Fuente & Bona 2002 H. maximiliani Mikan 1820 H. tectifera Cope 1869

Hydromedusa is a turtle genus in the family Chelidae, commonly known as the South American snake-necked turtles. They are quite closely related to the South American side-necked swamp turtles ( Acanthochelys) and the snake-necked turtles of the Australian- Melanesian region ( Chelodina), but less closely to the spine-necked river turtles of South America ( Podocnemididae) which belong to a more modern lineage of Pleurodira.

Species

This genus contains the following extant^[1] and fossil species:

Brazilian snake-necked turtle, Cágado da Serra, Hydromedusa maximiliani
Argentine snake-necked turtle, Cágado pescoço de cobra, Hydromedusa tectifera
Hydromedusa casamayorensis De la Fuente & Bona 2002, Salamanca and Sarmiento Formations, Argentina

Wikimedia Commons has media related to Hydromedusa.

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
Hydromedusa	Wikidata: Q783716 Wikispecies: Hydromedusa BOLD: 171543 CoL: 4ZTM GBIF: 2442138 iNaturalist: 39631 IRMNG: 1015856 ITIS: 208722 NCBI: 61326 Open Tree of Life: 678644 Paleobiology Database: 37613 uBio: 5796849 WoRMS: 1056585

References

^ Gaffney, E. S. (May 10, 1977). "The side-necked turtle family Chelidae : a theory of relationships using shared derived characters. American Museum novitates ; no. 2620". Novitates. 2620. S2CID 73704639.

This article about a turtle is a stub. You can help Wikipedia by expanding it.

Molina, F. J., & Leynaud, G. C. (2017). Thermoconformity strategy in the freshwater turtle Hydromedusa tectifera (Testudines, Chelidae) in its southern distribution area. Journal of Thermal Biology, 69, 178–183. https://doi.org/10.1016/j.jtherbio.2017.07.008