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 Neogastropoda Wenz, 1938 see Suborder Neogastropoda Wenz, 1938
                 Superfamily Muricacea de Costa, 1776 see Superfamily Muricoidea Rafinesque, 1815
                   Family Marginellidae Fleming, 1828 - marginellas
                     Subfamily Cystiscinae Stimpson, 1865
                       Genus Cystiscus Stimpson, 1865