living organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
Status: extant
   Superkingdom Eukaryotae see Domain Eukaryota Chatton, 1925
  Status: extant
     Kingdom Animalia Linnaeus, 1758 - animals
    Status: extant
       Subkingdom Eumetazoa Butschli, 1910 see [unranked] Eumetazoa Bütschli, 1910
      Status: extant
         Phylum Mollusca Linnaeus, 1758 - molluscs
        Status: extant
           Class Bivalvia Linnaeus, 1758 - bivalves
          Status: extant
             Subclass Heterodonta Neumayr, 1884 see Clade Heterodonta Neumayr, 1884
            Status: extant
               Order Veneroida H. & A. Adams, 1856 see Order Venerida Gray, 1854
              Status: extant
                 Superfamily Cardiacea Lamarck, 1809 see Superfamily Cardioidea Lamarck, 1809
                Status: extant
                   Family Cardiidae Lamarck, 1809 - cockles
                  Status: extant
                     Subfamily Fraginae Stewart, 1930
                    Status: extant
                       1 Genus Fragum Röding, 1798
                      Status: extant
                       2 Genus Corculum Röding, 1798
                      Status: extant
                       3 Genus Ctenocardia Adams & Adams, 1857
                      Status: extant
                       4 Genus Trigoniocardia Dall, 1900
                      Status: extant