Eurysternum

Eurysternum is an extinct genus of sea turtle. Its type species is Eurysternum wagleri,[1] the holotype of which has since been lost and only survives in illustrations.[2]

Eurysternum Temporal range: Late Jurassic PreꞒ Ꞓ O S D C P T J K Pg N

Fossil
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Reptilia
Order:	Testudines
Suborder:	Cryptodira
Family:	†Eurysternidae
Genus:	†Eurysternum Meyer, 1839
Species
E. wagleri Meyer, 1839
Synonyms
Acichelys Meyer, 1854

Misassigned species

Eurysternum ignoratum Bram, 1965 is a junior synonym of Thalassemys hughii.[3] The Late Jurassic species Eurysternum neuquinum Fernandez and de la Fuente, 1988, described from marine deposits in Argentina, is now placed in its own genus Neusticemys.[4]

gollark: You wouldn't actually see the beams, for one thing, as far as I know.

gollark: "Big laser weapons on spaceships" probably could exist, I guess. Though they probably wouldn't really look like that.

gollark: What do they actually *do*, though?

gollark: Can you be more specific? IIRC Star Trek phasers did a gazillion random things depending on plot convenience.

gollark: I'm hoping there's some comparatively cheap way to at least mitigate the climatic issues, because otherwise it seems unlikely that (without massive societal change of some kind) much will be done.

References

Karl Cäsar von Leonhard (1861). Neues Jahrbuch für Mineralogie, Geognosie, Geologie und Petrefakten-Kunde. E. Schweizerbart. p. 473.
Walter G. Joyce (2003). "A new Late Jurassic turtle specimen and the taxonomy of Palaeomedusa testa and Eurysternum wagleri" (PDF). PaleoBios. 23 (3): 1–8. Archived from the original (PDF) on 2015-10-01.
J. Anquetin, C. Puntener, and J.-P. Billon-Bruyat. 2014. A taxonomic review of the Late Jurassic eucryptodiran turtles from the Jura Mountains (Switzerland and France). PeerJ 2:e369
M. S. Fernandez and M. S. de la Fuente. 1993. Las tortugas casiquélidias de las calizas litográficas titonianas del área Los Catutos Argentina. Ameghiniana 30(3):283-295.

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Testudines

Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Subclass: Anapsida
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 †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 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 †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
†Nanhsiungchelyidae	†Anomalochelys †Basilemys †Jiangxichelys
†Protostegidae	†Archelon †Atlantochelys †Chelosphargis †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	†Cearachelys †Chedighaii †Chupacabrachelys †Foxemys †Galianemys †Kinkonychelys †Kurmademys †Polysternon †Puentemys †Sankuchemys
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 †Carbonemys †Cerrejonemys †Cordichelys Erymnochelys †Latentemys Peltocephalus Podocnemis †Stupendemys

	†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

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