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Eurysternum Temporal range: Kimmeridgian ~155–150 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
Fossil in Bürgermeister Müller Museum
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Reptilia
Clade:	Pantestudines
Clade:	Testudinata
Clade:	†Thalassochelydia
Family:	†Eurysternidae
Genus:	†Eurysternum Meyer, 1839
Species
E. wagleri Meyer, 1839
Synonyms
Acichelys Meyer, 1854

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

Formerly assigned species

Eurysternum ignoratum Bram, 1965 is a junior synonym of Thalassemys hughii. 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.

References

1. Anquetin, J.; Püntener, C.; Joyce, W. G. (2017). "A Review of the Fossil Record of Turtles of the Clade Thalassochelydia" (PDF). Bulletin of the Peabody Museum of Natural History. 58 (2): 317–369. doi:10.3374/014.058.0205. S2CID 31091127.
2. Karl Cäsar von Leonhard (1861). Neues Jahrbuch für Mineralogie, Geognosie, Geologie und Petrefakten-Kunde. E. Schweizerbart. p. 473.
3. 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.
4. 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
5. 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.

v t e Pantestudines
Kingdom: Animalia Phylum: Chordata Class: Sauropsida Clade: Diapsida Clade: Sauria Clade: Archelosauria Sauropsida see Sauropsida Pantestudines see below↓ Pantestudines
Pantestudines †Eorhynchochelys †Eunotosaurus? †Odontochelys †Pappochelys Testudinata †Chinlechelys †Condorchelys †Eileanchelys †Heckerochelys †Indochelys †Kallokibotion †Kayentachelys †Proganochelys †Proterochersis †Spoochelys †Australochelyidae Australochelys Palaeochersis Waluchelys †Meiolaniformes Chubutemys Otwayemys Patagoniaemys Peligrochelys Trapalcochelys Meiolaniidae Gaffneylania Meiolania Ninjemys Niolamia Warkalania †Sichuanchelyidae Laurasichersis Mongolochelys Sichuanchelys †Helochelydridae Aragochersis Helochelydra Helochelys Naomichelys Solemys †Compsemydidae Berruchelus Calissounemys Compsemys Kallokibotion? Peltochelys Riodevemys? Selenemys? Tongemys †Paracryptodira Compsemydidae? Helochelydridae? Pleurosternidae Dinochelys Dorsetochelys Glyptops Pleurosternon Riodevemys? Selenemys? Toremys Uluops Baenidae Arundelemys Arvinachelys Baena Boremys Cedrobaena Chisternon Denazinemys Edowa Eubaena Gamerabaena Gehennachelys Goleremys Hayemys Lakotemys Neurankylus Palatobaena Peckemys Plesiobaena Protobaena Saxochelys Scabremys Stygiochelys Thescelus Trinitichelys †Xinjiangchelyidae Annemys Brodiechelys Camerochelys Chengyuchelys Jastmelchyi Kalasinemys Larachelus Phunoichelys Protoxinjiangchelys Shartegemys Siamochelys Tienfuchelys Undjulemys Xinjiangchelys Yanduchelys †Sinemydidae / Macrobaenidae Anatolemys Appalachemys Asiachelys Aurorachelys Changmachelys Dracochelys Gallica Galvechelone Hongkongochelys Hoyasemys Jeholochelys Judithemys Kirgizemys Liaochelys Macrobaena Manchurochelys Ordosemys Osteopygis Oxemys Sinemys Tienfucheloides Wuguia Xiaochelys Yakemys Yumenemys †Thalassochelydia (sensu Joyce et al., 2021) Aplax Cyrtura Euryaspis Hispaniachelys Neusticemys Owadowia Pelobatochelys Thalassemys Protostegidae? "Eurysternidae" Achelonia Chelonides Eurysternum Hydropelta Idiochelys Palaeomedusa Parachelys "Plesiochelyidae" Craspedochelys Globochelus Hylaeochelys? Jurassichelon? Plesiochelys Portlandemys Tropidemys Sandownidae Angolachelys Brachyopsemys Leyvachelys Sandownia Solnhofia? Testudines see Testudines
See also: Angolachelonia Ankylopoda Mesochelydia Perichelydia Category

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