Phylum Mollusca Linnaeus, 1758 - molluscs
   Class Solenogastres Gegenbaur, 1878
     Order Cavibelonia Salvini-Plawen, 1978
       Family Drepanomeniidae Salvini-Plawen, 1978 [monotypic]
         1 Genus Drepanomenia Heath, 1911