Superclass Spirotricha Bütschli, 1889 see Class Spirotrichea Bütschli, 1889
   Class Oligotrichea Bütschli, 1889 see Subclass Oligotrichia Bütschli, 1889
     Subclass Oligotrichia Bütschli, 1889
       Order Choreotrichida Small & Lynn, 1985
         Suborder Strobilidiina Small & Lynn, 1985
           Family Strobilidiidae Kahl, 1929
             1 Genus Strobilidium Schewiakoff, 1892
             2 Genus Rimostrombidium Jankowski, 1978
             3 Genus Pelagostrobilidium Petz et al., 1995