Superclass Spirotricha Bütschli, 1889 see Class Spirotrichea Bütschli, 1889
   Class Oligotrichea Bütschli, 1889 see Subclass Oligotrichia Bütschli, 1889
     Subclass Oligotrichia Bütschli, 1889
       Order Oligotrichida Bütschli, 1889 see Subclass Oligotrichia Bütschli, 1889
         Family "Strombidiidae" Fauré-Fremiet, 1970
           1 Genus Parallelostrombidium Agatha, 2004
           2 Genus Omegastrombidium Agatha, 2004
           3 Genus Spirostrombidium Jankowski, 1978
           4 Genus Novistrombidium Song & Bradbury, 1998
           5 Genus Laboea Lohmann, 1908
           6 Genus Strombidium Claparède & Lachmann, 1859