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
         Genus Plawenia Scheltema & Schander, 2000
           1 Plawenia schizoradulata (Salvini-Plawen, 1978) Scheltema & Schander, 2000
           2 Plawenia sphaera Scheltema & Schander, 2000
           3 Plawenia argentinensis Scheltema & Schander, 2000