Phylum Mollusca Linnaeus, 1758 - molluscs
   Conchifera Gegenbaur, 1878 see Subphylum Conchifera Gegenbauer, 1878
     Class Scaphopoda Bronn, 1862 - tusk shells
       Order Gadilida Starobogatov, 1974
         Suborder Gadilimorpha Steiner, 1992
           Family Gadilidae Stoliczka, 1868
             Subfamily Gadilinae Stoliczka, 1868
               1 Genus Bathycadulus Scarabino, 1995
               2 Genus Cadulus Philippi, 1844
               3 Genus Gadila Gray, 1847
               4 Genus †Sulcogadila Moroni & Ruggieri, 1981