living organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Superkingdom Eukaryotae see Domain Eukaryota Chatton, 1925
     Kingdom Animalia Linnaeus, 1758 - animals
       Subkingdom Eumetazoa Butschli, 1910 see [unranked] Eumetazoa Bütschli, 1910
         Phylum Mollusca Linnaeus, 1758 - molluscs
           Class Gastropoda Cuvier, 1795 - snails and slugs
             Subclass Pulmonata Cuvier, 1814 - land snails and slugs see Order Pulmonata Cuvier, 1814
               Order Basommatophora Keferstein, 1865 see Suborder Basommatophora Keferstein, in Bronn, 1864
                 Superfamily Planorbacea see Superfamily Planorboidea Rafinesque, 1815
                   1 Family Planorbidae Rafinesque, 1815 - planorbids
                   2 Family Bulinidae Fischer & Crosse, 1880 see Subfamily Bulininae Fischer & Crosse, 1880
                   3 Family Protancylidae Walker, 1923 see Tribe Miratestini Sarasin & Sarasin, 1897
                   4 Family Patelloplanorbidae Franc, 1968 see Tribe Miratestini Sarasin & Sarasin, 1897
                   5 Family Neoplanorbidae Hannibal, 1912 see Subfamily Neoplanorbinae Hannibal, 1912
                   6 Family Ancylidae Rafinesque, 1815 - freshwater limpets see Tribe Ancylini Rafinesque, 1815