Phylum Mollusca Linnaeus, 1758 - molluscs
   Class Gastropoda Cuvier, 1795 - snails and slugs
     Subclass Heterobranchia Burmeister, 1837 [monotypic] see Superorder Heterobranchia Burmeister, 1837
       Order Heterostropha Fischer, 1885
         Superfamily Rissoelloidea Gray, 1850
           Family Cornirostridae Ponder, 1990
             1 Genus Anomalorbis Paul, 1991, nom. illeg. see Genus Anomalorbina Paul, 1996
             2 Genus Bonnetella Cossmann, 1908
             3 Genus Cyclostremiscus Pilsbry & Olsson, 1945
             4 Genus Tomura Pilsbry & McGinty, 1946
             5 Genus Noerrevangia Warén & Schander, 1993