Ctenochelys References

Ctenochelys Temporal range: Late Cretaceous, 89–70 Ma PreꞒ Ꞓ O S D C P T J K Pg N

Ctenochelys stenoporus
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Reptilia
Order:	Testudines
Suborder:	Cryptodira
Superfamily:	Chelonioidea
Family:	† Ctenochelyidae
Genus:	† Ctenochelys Zangerl, 1953
Type species
†C. stenoporus
Species
†C. stenoporus †C. acris

Ctenochelys (meaning "comb tortoise") is an extinct genus of marine turtle ( Cryptodira, Pancheloniidae), which existed during the Cretaceous period, and lived in the shallow waters of the Western Interior Seaway.^[1] Its fossils have been found in the Ripley Formation and Mooreville Chalk of central Alabama, United States.^[2] It was first named by C. H. Sternberg in 1904,^[3] and contains two species, C. stenoporus^[4] and C. acris.^[5]

Species

Ctenochelys stenoporus is the type species. It was originally thought to be a species of Toxochelys; T. bauri, until Sternberg declared it a separate genus.^[3] The two genera are similar in carapaces.^[1]

Ctenochelys acris was first named by Zangerl in 1953 and is now thought to be one of the earliest ancestors of modern cheloniids.^[6]

References

^ ^a ^b Kear BP, Lee MS (March 2006). "A primitive protostegid from Australia and early sea turtle evolution". Biol. Lett. 2 (1): 116–9. doi: 10.1098/rsbl.2005.0406. PMC 1617175. PMID 17148342.
^ "Gary Kobylski, New Chair of MO–15 Board and State Conservationist in Alabama - Section "Things other than Dirt!"" (PDF). Charles Love, The Coastal Plainer. Fall 2005. Archived from the original (PDF) on 2009-03-20. Retrieved 2008-07-01.
^ ^a ^b "Marine Turtles". Mike Everhart. 2004. Archived from the original on 2013-12-25. Retrieved 2008-07-01.
^ Matzke AT (2007). "An almost complete juvenile specimen of the Cheloniid turtle Ctenochelys Stenoporus (Hay, 1905) From the Upper Cretaceous Niobrara formation of Kansas, USA". Palaeontology. 50 (3): 669–91. doi: 10.1111/j.1475-4983.2007.00650.x.
^ Zangerl R (1953). "The vertebrate fauna of the Selma Formation of Alabama. Part IV. The turtles of the family Toxochelyidae". Fieldiana Geology Memoirs: 137–277.
^ Gentry AD (2016). "New material of the Late Cretaceous marine turtle Ctenochelys acris Zangerl, 1953 and a phylogenetic reassessment of the 'toxochelyid'-grade taxa". Journal of Systematic Palaeontology. 15 (8): 675–696. doi: 10.1080/14772019.2016.1217087. S2CID 88758027.

External links

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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