Sineruga
Sineruga insolita is a fossil ostracod species which existed in what is now France during the Silurian period. It was described by Vincent Perrier in 2012, and is the only species in the genus Sineruga. It has been found at four sites in the Armorican massif of northwestern France. References

Myodocopida
Prehistoric ostracod genera
Monotypic crustacean genera
Silurian crustaceans
Fossils of France