Phylum [Mollusca] Linnaeus, 1758 - molluscs
Status: extant; Count: -
   Class Bivalvia Linnaeus, 1758 - bivalves
  Status: extant; Count: 6o
     Subclass Palaeoheterodonta Newell, 1965 see Clade Palaeoheterodonta Newell, 1965
    Status: extant; Count: 2o; †1o
       Order †Modiomorphoida
      Status: fossil; Count: -