[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Phylum Mollusca Linnaeus, 1758 - molluscs
     Class Bivalvia Linnaeus, 1758 - bivalves
       Family Arcidae Lamarck, 1809 - arks
         1 Genus Arca Linnaeus, 1758
         2 Genus Asperarca Sacco, 1898
         3 Genus Barbatia Gray, 1842
         4 Genus Anadara Gray, 1847
         5 Genus Bathyarca Kobelt, 1891
         6 Genus Bentharca Verrill & Bush, 1898