Phylum Mollusca Linnaeus, 1758 - molluscs
   Class Bivalvia Linnaeus, 1758 - bivalves
     Subclass Pteriomorphia Beurlen, 1944 see Superorder Pteriomorphia Beurlen, 1944
       Order Arcida Gray, 1854
         Suborder Arcina Stoliczka, 1871 see Order Arcida Gray, 1854
           Superfamily Arcoidea Lamarck, 1809
             1 Family Arcidae Lamarck, 1809 - arks
             2 Family Noetiidae Stewart, 1930
             3 Family Parallelodontidae Dall, 1898
             4 Family Cuculaeidae Vaught, 1989, orth. inval. [monotypic] see Family Cucullaeidae Stewart, 1930