organisms
   Animalia [Linnaeus, 1758]
     Eumetazoa [Bütschli, 1910]
       Bilateria [Hatschek, 1888]
         Protostomia [Grobben, 1908]
           Spiralia [Schleip, 1929]
             Teloblastica [(C. Nielsen, 1995)]
               Articulata [Cuvier]
                 Mollusca [Linnaeus, 1758]
                   Ostrea [Linnaeus, 1758]
                     Ostrea edulis [Linnaeus, 1758]