Eurysternum
Introduction Fossil in Museum für Naturkunde, Berlin '''''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''.
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