Phylum Mollusca Linnaeus, 1758 - molluscs
Status: extant
   Class Bivalvia Linnaeus, 1758 - bivalves
  Status: extant
     Subclass Palaeoheterodonta Newell, 1965 see Clade Palaeoheterodonta Newell, 1965
    Status: extant
       Order Unionida Gray, 1854
      Habitat: freshwater; Status: extant
         Genus Mya sensu Röding, 1798
        Status: extant