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 Monoplacophora Odhner, 1940 - monoplacophorans
             Order Tryblidioidea von Zittel, 1899 see Order Monoplacophorida Wenz, in Knight, 1952
               Superfamily Tryblidiacea see Superfamily Tryblidioidea Pilsbry, 1899
                 1 Family †Tryblidiidae Pilsbry, in Zittel-Eastman, 1899
                 2 Family Neopilinidae Knight & Yochelson, 1958