Eurysternum

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;

Last updated May 26, 2025

Fossil in Museum fur Naturkunde, Berlin Eurysternum.jpg — Fossil in Museum für Naturkunde, Berlin

Eurysternum is an extinct genus of thalassochelydian turtle.^[1] Its type species is Eurysternum wagleri,^[2] the holotype of which has since been lost and only survives in illustrations.^[3]

Formerly assigned species

Eurysternum ignoratum Bram, 1965 is a junior synonym of Thalassemys hughii .^[4] 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 .^[5]

References

↑ 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. Bibcode:2017BPMNH..58..317A. doi:10.3374/014.058.0205. S2CID 31091127.
↑ 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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[Anquetin2017-1] 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. Bibcode:2017BPMNH..58..317A. doi:10.3374/014.058.0205. S2CID 31091127.

[leon-2] Karl Cäsar von Leonhard (1861). Neues Jahrbuch für Mineralogie, Geognosie, Geologie und Petrefakten-Kunde. E. Schweizerbart. p. 473.

[WGJ-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.

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