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 Scaphopoda Bronn, 1862 - tusk shells
             Order Dentaliida Starobogatov, 1974
               Family Dentaliidae Children, 1834
                 1 Genus Dentalium Linnaeus, 1758
                 2 Genus Antalis Adams & Adams, 1854
                 3 Genus Graptacme Pilsbry & Sharp, 1897
                 4 Genus Fissidentalium Fischer, 1885
                 5 Genus Pictodentalium Habe, 1963
                 6 Genus Fustiaria Stoliczka, 1868