Desmatochelys - Wikipedia

Desmatochelys Temporal range: Cretaceous, 120–83.5 Ma PreꞒ Ꞓ O S D C P T J K Pg N ^[1]

Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Reptilia
Order:	Testudines
Suborder:	Cryptodira
Family:	†Protostegidae
Genus:	†Desmatochelys Williston, 1894
Type species
Desmatochelys lowi Williston, 1894

Desmatochelys is an extinct genus of sea turtles belonging to the family Protostegidae.^[2]^[3]

The genus contains the following species:

According to Elizabeth L. Nicholls the genus should be expanded to include closely related members belong to Notochelone and Rhinochelys.^[4]

As of 2015, D. padillai is the oldest known species of sea turtles.^[5]

Members of the genus are characterised by the extended skull roof, large nasal bones, a paddle-like humerus and a distinct body shell or carapace.^[6]

References

^ Edwin A. Cadena and James F. Parham (2015). "Oldest known marine turtle? A new protostegid from the Lower Cretaceous of Colombia". PaleoBios. 32 (1): 1–42.
^ Karl, H. V., & Tichy, G. (2010). Maorichelys wiffeni n. gen. n. sp., una nueva tortuga marina del Eoceno de Nueva Zelanda (Testudines: Dermochelyidae).
^ "Introduction to Testudines". UCMP Berkeley. Retrieved 25 April 2015.
^ Nicholls, Elizabeth L. (1992). "Note on the occurrence of the marine turtle Desmatochelys (Reptilia: Chelonioidea) from the Upper Cretaceous of Vancouver Island". Canadian Journal of Earth Sciences. 29 (2): 377–380. doi:10.1139/e92-033.
^ Jandial, Shraddha (8 September 2015). "Oldest fossil sea turtle discovered in Colombia". India Today. Retrieved 18 September 2015.
^ "Desmatochelys". Paleos. Retrieved 18 September 2015.

v t e Extinct turtles
Jurassic	Achelonia Americhelydia Bashuchelys Basilochelys Caribemys Chelonides Dinochelys Dorsetochelys Eurysternum Eurysternidae Hispaniachelys Hydropelta Idiochelys Neusticemys Parachelys Palaeomedusa Plesiochelys Pleurosternidae Selenemys Sinaspideretes Tacuarembemys Thalassemys Uluops
Cretaceous	Allopleuron Atlantochelys Angolachelys Anomalochelys Araripemys Araripemydidae Archelon Arvinachelys Aurorachelys Baenoidea Basilemys Bouliachelys Caririemys Cearachelys Chelosphargis Chubutemys Chupacabrachelys Compsemys victa Corsochelys Cratochelone Ctenochelys Desmatochelys Desmatochelys padillai Emarginachelys Foxemys Gigantatypus Gilmoremys Glyptops Hoplochelys Hoyasemys Iserosaurus Jeholochelys Jiangxichelys Kinkonychelys Kirgizemys Khunnuchelys Kurmademys Leyvachelys Liaochelys Lindholmemydidae Lomalatachelys Nanhsiungchelyidae Neurankylus Notochelone Ocepechelon Ordosemys Paracryptodira Patagoniaemys Peritresius Polysternon Pleurosternon Prochelidella Protostega Protostegidae Pneumatoarthrus Rhinochelys Sankuchemys Santanachelys Sinemys Terlinguachelys Toxochelys Trionyx kansaiensis Yaminuechelys
Paleogene and Neogene	Acherontemys Allaeochelys Anosteira Arabemys Argillochelys Axestemys Baenidae Banhxeochelys Berruchelus Bothremydidae Carbonemys Carolinochelys Cedrobaena Centrochelys atlantica Centrochelys vulcanica Cerrejonemys Chelodina murrayi Chelydrops Chelydropsis Chisternon Cosmochelys Elseya uberrima Elseya nadibajagu Eochelone Eosphargis Euclastes Foxemys Galianemys Gamerabaena Glarichelys Hadrianus Hesperotestudo Hutchemys Itilochelys Kinosternon pojoaque Lapparentemys Macrocephalochelys Manchurochelys Megalochelys (Megalochelys atlas) Mesodermochelys Mexichelys Miocaretta Niolamia Pacifichelys Palaeoamyda Palatobaena Peckemys Phrynops paranaensis Planiplastron Plesiobaena Procolpochelys Protochelydra Protosphargis Psephophorus Puppigerus Rheodytes devisi Rhinoclemmys panamaensis Stupendemys Stylemys Syllomus Tasbacka Trionyx ikoviensis Warkalania
Pleistocene	Centrochelys burchardi Centrochelys robusta Hesperotestudo mlynarskii Hesperotestudo percrassa Ninjemys Meiolaniidae Meiolania
Recent	Cylindraspis species: Domed Mauritius giant tortoise Domed Rodrigues giant tortoise Réunion giant tortoise Saddle-backed Mauritius giant tortoise Saddle-backed Rodrigues giant tortoise Aldabrachelys abrupta Aldabrachelys grandidieri Chelonoidis abingdonii Lonesome George Kinosternon arizonense

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

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References

Further Reading