Phylum Mollusca Linnaeus, 1758 - molluscs
   Class Gastropoda Cuvier, 1795 - snails and slugs
     Subclass Divasibranchia Minichev & Starobogatov, 1975
       Order Stylommatophora Schmidt, 1855 see Infraorder Stylommatophora Schmidt, 1855
         (Achatinid Sigmurethra)
           Suborder Sigmurethra Pilsbry, 1900 see Group Sigmurethra Pilsbry, 1900
             Superfamily Orthalicoidea Martens, 1860
               Family Urocoptidae Pilsbry, 1898 (1868), nom. inq.
                 1 Subfamily Tetrentodoninae Bartsch, 1943, orth. inval. see Subfamily Tetrentodontinae Bartsch, 1943
                 2 Subfamily Brachypodellinae Baker, 1956 [monotypic]
                 3 Subfamily Urocoptinae Pilsbry, 1898 (1868)
                 4 Subfamily Johaniceraminae Jaume & de la Torre, 1972 [monotypic] see Subfamily Microceraminae Pilsbry, 1904
                 5 Subfamily Eucalodiinae Fischer & Crosse, 1873
                 6 Subfamily Holospirinae Pilsbry, 1946