Phylum Mollusca Linnaeus, 1758 - molluscs
   Class Gastropoda Cuvier, 1795 - snails and slugs
     Subclass Gymnomorpha Salvini-Plawen, 1970 see Subclass Pulmonata Cuvier, 1814
       Order Onchidiida Solem, 1959 [monotypic]
         Superfamily Onchidioidea Rafinesque, 1815 [monotypic]
           Family Onchidiidae Rafinesque, 1815
             01 Genus Onchidium Buchanan, 1800
             02 Genus Hoffmannola Strand, 1932
             03 Genus Labella Vaught, 1989, orth. inval. see Genus Labbella Starobogatov, 1970
             04 Genus Lessonina Starobogatov, 1976
             05 Genus Onchidella Gray, 1850
             06 Genus Onchidina Semper, 1882
             07 Genus Paraoncidium Labbé, 1934
             08 Genus Peronia Fleming, 1822
             09 Genus Peronina Plate, 1893
             10 Genus Platevindex Baker, 1938
             11 Genus Quoyella Starobogatov, 1976
             12 Genus Semperoncis Starobogatov, 1976