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 Veneroida H. & A. Adams, 1856 see Order Venerida Gray, 1854
                 Superfamily Lucinacea Fleming, 1828, nom. illeg. see Superfamily Lucinoidea Fleming, 1828
                   Family Thyasiridae Dall, 1900 (1895)
                     1 Genus Thyasira Lamarck, 1818
                     2 Genus Adontorhina Berry, 1947
                     3 Genus Axinopsida Keen & Chavan, 1951
                     4 Genus Axinulus Verrill & Bush, 1898 see Genus Thyasira Lamarck, 1818
                     5 Genus Leptaxinus Verrill & Bush, 1898 see Genus Thyasira Lamarck, 1818
                     6 Genus Maorithyas Fleming, 1950
                     7 Genus Parthysira Boss, 1982, orth. inval. see Genus Parathyasira Iredale, 1930
                     8 Genus Tauraxinus Sacco, 1901