# 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