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 Prosobranchia Milne-Edwards, 1848 - prosobranchs see Class Gastropoda Cuvier, 1795
               Order Mesogastropoda Thiele, 1925 - mesogastropods see [unranked] mesogastropods
                 Superfamily Cerithiacea Férussac, 1819 see Superfamily Cerithioidea Fleming, 1822
                   Family Turritellidae Lovén, 1847 - turret snails
                     1 Genus Turritellopsis Sars, 1878
                     2 Subfamily Turritellinae Lovén, 1847
                     3 Subfamily Protominae Marwick, 1957
                     4 Subfamily Pareorinae Finlay & Marwick, 1937
                     5 Subfamily Turritellopsinae Marwick, 1957 see Family Mathildidae Dall, 1889
                     6 Subfamily Orectospirinae Habe, 1955
                     7 Subfamily Vermiculariinae Dall, 1913