Eurysternum

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]

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

Fossil in Museum für Naturkunde, Berlin

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

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.