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 Bivalvia Linnaeus, 1758 - bivalves
             Subclass Heterodonta Neumayr, 1884 see Clade Heterodonta Neumayr, 1884
               Order Myoida Stoliczka, 1870 see Order Myida Stoliczka, 1870
                 Superfamily Hiatellacea see Superfamily Hiatelloidea Gray, 1824
                   Family Hiatellidae Gray, 1824 - geoducks
                     1 Genus Hiatella Bosc, 1801
                     2 Genus Cyrtodaria Reuss, 1801
                     3 Genus Saxicavella Fischer, 1878
                     4 Genus Panomya Gray, 1857
                     5 Genus Panopea Ménard de la Groye, 1807