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Euheterodonta
Polymesoda artacta from the Maracaibo estuary, Zulia
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Bivalvia
Subclass:	Autobranchia
Infraclass:	Heteroconchia
Subterclass:	Euheterodonta

Euheterodonta is an subterclass of Mollusca in the class Bivalvia.

Families

Subterclass Euheterodonta

• Superorder Anomalodesmata Dall, 1889
  • Superfamily Clavagelloidea d'Orbigny, 1844
    • Clavagellidae d'Orbigny, 1844
    • Penicillidae Gray, 1858
  • Superfamily Cuspidarioidea Dall, 1886
    • Cuspidariidae Dall, 1886
    • Halonymphidae Scarlato & Starobogatov, 1983
    • Protocuspidariidae Scarlato & Starobogatov, 1983
    • Spheniopsidae J. Gardner, 1928
  • Superfamily Myochamoidea Carpenter, 1861
    • Cleidothaeridae Hedley, 1918 (1870)
    • Myochamidae Carpenter, 1861
  • Superfamily Pandoroidea Rafinesque, 1815
    • Lyonsiidae P. Fischer, 1887
    • Pandoridae Rafinesque, 1815
  • Superfamily Pholadomyoidea King, 1844
    • Parilimyidae Morton, 1981
    • Pholadomyidae King, 1844
  • Superfamily Poromyoidea Dall, 1886
    • Cetoconchidae Ridewood, 1903
    • Poromyidae Dall, 1886
  • Superfamily Thracioidea Stoliczka, 1870 (1839)
    • Clistoconchidae Morton, 2012
    • Laternulidae Hedley, 1918 (1840)
    • Periplomatidae Dall, 1895
    • Thraciidae Stoliczka, 1870 (1839)
  • Superfamily Verticordioidea Stoliczka, 1870
    • Euciroidae Dall, 1895
    • Lyonsiellidae Dall, 1895
    • Verticordiidae Stoliczka, 1870
• Superorder Imparidentia Bieler, P. M. Mikkelsen & Giribet, 2014
  • Order Adapedonta Cossmann & Peyrot, 1909
    • Superfamily Hiatelloidea J.E. Gray, 1824
      • Hiatellidae Gray, 1824
    • Superfamily Solenoidea Lamarck, 1809
      • Pharidae H. Adams & A. Adams, 1856
      • Solenidae Lamarck, 1809
  • Order Cardiida Ferussac, 1822
    • Superfamily Cardioidea Lamarck, 1809
      • Cardiidae Lamarck, 1809
      • Pterocardiidae Scarlato & Starobogatov, 1979 †
    • Superfamily Tellinoidea Blainville, 1814
  • Order Hippuritida Newell, 1965 †
    • Suborder Hippuritidina Newell, 1965 †
      • Superfamily Caprinoidea d'Orbigny, 1847 †
        • Antillocaprinidae Mac Gillavry, 1937 †
        • Caprinidae d'Orbigny, 1847 †
        • Caprinuloideidae Damestoy, 1971 †
        • Ichthyosarcolitidae Douvillé, 1887 †
      • Superfamily Radiolitoidea d'Orbigny, 1847 †
        • Caprinulidae Yanin, 1990 †
        • Caprotinidae Gray, 1848 †
        • Diceratidae Dall, 1895 †
        • Hippuritidae Gray, 1848 †
        • Monopleuridae Munier-Chalmas, 1873 †
        • Plagioptychidae Douvillé, 1888 †
        • Polyconitidae Mac Gillavry, 1937 †
        • Radiolitidae d'Orbigny, 1847 †
        • Trechmannellidae Cox, 1934 †
    • Suborder Requieniidina Skelton, 2013 †
      • Superfamily Requienioidea Kutassy, 1934 †
        • Epidiceratidae Rengarten, 1950 †
        • Requieniidae Kutassy, 1934 †
  • Incertae sedis
    • Superfamily Chamoidea Lamarck, 1809
      • Chamidae Lamarck, 1809
    • Superfamily Cyamioidea Sars, 1878
      • Cyamiidae G.O. Sars, 1878
      • Galatheavalvidae Knudsen, 1970
      • Sportellidae Dall, 1899
    • Superfamily Gaimardioidea Hedley, 1916
      • Gaimardiidae Hedley, 1916
    • Superfamily Galeommatoidea J.E. Gray, 1840
      • Basterotiidae Cossmann, 1909
      • Galeommatidae Gray, 1840
      • Kelliidae Forbes & Hanley, 1848
      • Lasaeidae Gray, 1842
      • Montacutidae W. Clark, 1855
    • Superfamily Gastrochaenoidea Gray, 1840
      • Gastrochaenidae Gray, 1840
    • Superfamily Kalenteroidea Marwick, 1953 †
      • Kalenteridae Marwick, 1953 †
    • Superfamily Mactroidea Lamarck, 1809
      • Anatinellidae Deshayes, 1853
      • Cardiliidae P. Fischer, 1887
      • Mactridae Lamarck, 1809
      • Mesodesmatidae Gray, 1840
    • Superfamily Sphaerioidea Deshayes, 1855 (1820)
      • Sphaeriidae Deshayes, 1855 (1820)
    • Superfamily Ungulinoidea Gray, 1854
      • Ungulinidae Gray, 1854
  • Order Lucinida Gray, 1854
    • Superfamily Lucinoidea J. Fleming, 1828
      • Lucinidae J. Fleming, 1828
    • Superfamily Thyasiroidea Dall, 1900 (1895)
      • Thyasiridae Dall, 1900 (1895)
  • Order Megalodontida Starobogatov, 1992 †
    • Superfamily Megalodontoidea Morris & Lycett, 1853 †
      • Megalodontidae Morris & Lycett, 1853 †
      • Pachyrismatidae Scarlato & Starobogatov, 1979 †
  • Order Modiomorphida Newell, 1969 †
    • Superfamily Modiomorphoidea S. A. Miller, 1877 †
      • Modiomorphidae S. A. Miller, 1877 †
      • Palaeopharidae Marwick, 1953 †
  • Order Myida Stoliczka, 1870
    • Superfamily Dreissenoidea Gray, 1840
      • Dreissenidae Gray, 1840
    • Superfamily Myoidea Lamarck, 1809
      • Corbulidae Lamarck, 1818
      • Erodonidae Winckworth, 1932
      • Myidae Lamarck, 1809
    • Superfamily Pholadoidea Lamarck, 1809
      • Pholadidae Lamarck, 1809
      • Teredinidae Rafinesque, 1815
      • Xylophagidae Purchon, 1941
  • Order Venerida Gray, 1854
    • Superfamily Arcticoidea Newton, 1891 (1844)
      • Arcticidae Newton, 1891 (1844)
      • Trapezidae Lamy, 1920 (1895)
    • Superfamily Cyrenoidea Gray, 1840
      • Cyrenidae Gray, 1840
      • Cyrenoididae H. Adams & A. Adams, 1857 (1853)
      • Glauconomidae Gray, 1853
    • Superfamily Glossoidea J.E. Gray, 1847 (1840)
      • Glossidae Gray, 1847 (1840)
      • Lutetiidae Zhgenti, 1976 †
    • Incertae sedis
      • Kelliellidae Fischer, 1887
      • Vesicomyidae Dall & Simpson, 1901
    • Superfamily Veneroidea Rafinesque, 1815
      • Isocyprinidae R. N. Gardner, 2005 †
      • Neoleptonidae Thiele, 1934
      • Veneridae Rafinesque, 1815

• Bivalve taxonomy