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Heterodonta is a taxonomic subclass of saltwater clams, marine bivalve molluscs. This subclass includes the edible clams, the cockles and the Venus clams.[1]

Heterodonta
NZ Cockles.JPG
The venerid species Austrovenus stutchburyi, the New Zealand cockle, is sold internationally as sea food.
Scientific classification e
Kingdom: Animalia
Phylum: Mollusca
Class: Bivalvia
Subclass: Heterodonta
Orders

DescriptionEdit

These bivalves are distinguished by having the two halves of the shell equally sized (i.e, they are equivalved) and having a few cardinal teeth separated from a number of long lateral teeth. Their shells lack a nacreous layer, and the gills are lamellibranch in form. Most species have a siphon.[2]

Orders and familiesEdit

In 2010, a new proposed classification system for the Bivalvia was published in by Bieler, Carter & Coan, revising the classification of the Bivalvia, including the subclass Heterodonta.[3] The following tree is their info which has been updated with the latest information from the World Register of Marine Species:

Subclass: Heterodonta

Notes:

  • Family †Lyrodesmatidae was classified by Bieler, Carter & Coan (2010) as uncertain Heterodonta but has since been classified as Palaeoheterodonta.[23]
  • Family †Redoniidae was classified by Bieler, Carter & Coan (2010) as uncertain Heterodonta but has since been classified more specifically as Anodontopsoidea.[24]
  • Family †Lipanellidae was classified by Bieler, Carter & Coan (2010) as uncertain Heteroconchia (a proposed infraclass of the proposed bivalve subclass Autobranchia) but has since been classified as uncertain Heterodonta.[25]

ReferencesEdit

  1. ^ Heterodonta Neumayr, 1884. Retrieved through: World Register of Marine Species on 3 February 2009.
  2. ^ Barnes, Robert D. (1982). Invertebrate Zoology. Philadelphia, PA: Holt-Saunders International. p. 340. ISBN 0-03-056747-5.
  3. ^ Bieler, R., Carter, J.G. & Coan, E.V. (2010) Classification of Bivalve families. Pp. 113-133, in: Bouchet, P. & Rocroi, J.P. (2010), Nomenclator of Bivalve Families. Malacologia 52(2): 1-184
  4. ^ Archiheterodonta Giribet in Taylor, Williams, Glover & Dyal, 2007. Retrieved through: World Register of Marine Species on 3 February 2009.
  5. ^ Giribet G. 2008. Bivalvia. Pp. 105-141, in: Ponder W.F. & Lindberg D.L. (eds), Molluscan Phylogeny. Berkeley: University of California Press, xi+469 pp.
  6. ^ "WoRMS - World Register of Marine Species - Actinodontida †". www.marinespecies.org. Retrieved 2019-04-02.
  7. ^ Carditoida Dall, 1889. Retrieved through: World Register of Marine Species on 3 August 2010.
  8. ^ Euheterodonta Giribet in Taylor, Williams, Glover & Dyal, 2007. Retrieved through: World Register of Marine Species on 3 February 2009.
  9. ^ Unassigned Euheterodonta. Retrieved through: World Register of Marine Species on 12 July 2009.
  10. ^ Anomalodesmata Dall, 1889. Retrieved through: World Register of Marine Species on 9 July 2010.
  11. ^ "WoRMS - World Register of Marine Species - Imparidentia". www.marinespecies.org. Retrieved 2019-04-03.
  12. ^ "WoRMS - World Register of Marine Species - Adapedonta". www.marinespecies.org. Retrieved 2019-04-03.
  13. ^ "WoRMS - World Register of Marine Species - Cardiida". www.marinespecies.org. Retrieved 2019-04-03.
  14. ^ "WoRMS - World Register of Marine Species - Galeommatida". www.marinespecies.org. Retrieved 2019-04-03.
  15. ^ "WoRMS - World Register of Marine Species - Gastrochaenida". www.marinespecies.org. Retrieved 2019-04-03.
  16. ^ "WoRMS - World Register of Marine Species - Hippuritida †". www.marinespecies.org. Retrieved 2019-04-03.
  17. ^ Lucinoida Gray, 1854. Retrieved through: World Register of Marine Species on 10 July 2010.
  18. ^ "WoRMS - World Register of Marine Species - Megalodontida †". www.marinespecies.org. Retrieved 2019-04-03.
  19. ^ "WoRMS - World Register of Marine Species - Modiomorphida †". www.marinespecies.org. Retrieved 2019-04-03.
  20. ^ Myoida Stoliczka, 1870. Retrieved through: World Register of Marine Species on 9 July 2010.
  21. ^ "WoRMS - World Register of Marine Species - Sphaeriida". www.marinespecies.org. Retrieved 2019-04-03.
  22. ^ Veneroida Gray, 1854. Retrieved through: World Register of Marine Species on 9 July 2010.
  23. ^ "WoRMS - World Register of Marine Species - Lyrodesmatidae P. Fischer, 1886 †". www.marinespecies.org. Retrieved 2019-04-02.
  24. ^ "WoRMS - World Register of Marine Species - Redoniidae Babin, 1966 †". www.marinespecies.org. Retrieved 2019-04-02.
  25. ^ "WoRMS - World Register of Marine Species - Lipanellidae Sánchez, 2005 †". www.marinespecies.org. Retrieved 2019-04-02.