Imperium naturæ C. Linnaeus, 1758 - nature
   Mundus Plinius - physical world
     naturalia - natural bodies
       Regnum Animale C. Linnaeus, 1758 - animal kingdom see Kingdom Animalia Linnaeus, 1758
         Class Vermes Linnaeus, 1758 - worms see Phylum Vermes (C. Linnaeus, 1758)
           Order Testacea Linnaeus, 1758
             Genus Mya Linnaeus, 1758
               15 Mya crispata Linnaeus, 1758
               16 Mya truncata Linnaeus, 1758 - truncate softshell clam
               17 Mya arenaria Linnaeus, 1758 - softshell clam
               18 Mya lutraria Linnaeus, 1758
               19 Mya pictorum Linnaeus, 1758
               20 Mya margaritifera Linnaeus, 1758
               21 Mya perna Linnaeus, 1758
               22 Mya vulsella Linnaeus, 1758