''Eurysternum'' is an extinct genus of thalassochelydian turtle. Its

type species In zoological nomenclature, a type species (''species typica'') is the species name with which the name of a genus or subgenus is considered to be permanently taxonomically associated, i.e., the species that contains the biological type specimen( ...

is ''Eurysternum wagleri'', the

holotype A holotype is a single physical example (or illustration) of an organism, known to have been used when the species (or lower-ranked taxon) was formally described. It is either the single such physical example (or illustration) or one of seve ...

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''.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.

References

Thalassochelydia Prehistoric turtle genera Kimmeridgian genera Late Jurassic turtles Late Jurassic reptiles of Europe Jurassic Germany Fossils of Germany Fossil taxa described in 1839 Taxa named by Christian Erich Hermann von Meyer {{Paleo-turtle-stub