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 Anomalodesmata Dall, 1889 see Order Anomalodesmata Dall, 1889
               Superfamily Clavegellacea see Superfamily Clavagellacea
                 Family Clavegellidae see Family Clavagellidae d'Orbigny, 1844, nom. protect.
                   1 Genus Clavegella see Genus Clavagella Blainville, 1817
                   2 Genus Humphreyia Gray, 1858
                   3 Genus Penicillus Bruguière, 1789, nom. illeg.