Class Scaphopoda Bronn, 1862 - tusk shells
   Order Gadilida Starobogatov, 1974
     Suborder Entalimorpha Steiner, 1992 [monotypic]
       Family Entalinidae Chistikov, 1979
         Subfamily Bathoxiphinae Chistikov, 1983
           1 Genus Bathoxiphus Pilsbry & Sharp, 1897
           2 Genus Rhomboxiphus Chistikov, 1983
           3 Genus Solenoxiphus Chistikov, 1983