Mollusca Linnaeus, 1758 - molluscs
   Aplacophora von Ihering, 1876 - aplacophorans see Phylum Mollusca Linnaeus, 1758
     Neomeniomorpha Pelseneer, 1906 - neomenioids see Class Solenogastres Gegenbaur, 1878
       Family Simrothiellidae Salvini-Plawen, 1978
         1 Genus Simrothiella Pilsbry, 1898
         2 Genus Cyclomenia Nierstrasz, 1902
         3 Genus Kruppomenia Nierstrasz, 1903
         4 Genus Uncimenia Nierstrasz, 1903
         5 Genus Biserramenia Salvini-Plawen, 1967
         6 Genus Birasoherpia Salvini-Plawen, 1978
         7 Genus Sialoherpia Salvini-Plawen, 1978
         8 Genus Helicoradomenia Scheltema & Kuzirian, 1991
         9 Genus Plawenia Scheltema & Schander, 2000