Heterodonta

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

Cycloconchidae
Hippuritoida
Lyrodesmatidae
Redoniidae
Carditoida
Anomalodesmata
Myoida
Lucinoida
Veneroida

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

Description[edit]

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[edit]

This subclass contains four extinct orders, five orders of living bivalves, and a group of as yet unassigned Euheterodonta:

2010 Taxonomy[edit]

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]

Subclass: Heterodonta

Infraclass: Archiheterodonta[4][5][edit]

Order: Carditoida[6][edit]

Infraclass: Euheterodonta[7][edit]

Unassigned Euheterodonta[8][edit]

Order: Anomalodesmata[9][edit]

Order: Myoida[10][edit]

Order: Lucinoida[11][edit]

Order: Veneroida[12][edit]

References[edit]

  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. ^ Carditoida Dall, 1889.  Retrieved through: World Register of Marine Species on 3 August 2010.
  7. ^ Euheterodonta Giribet in Taylor, Williams, Glover & Dyal, 2007.  Retrieved through: World Register of Marine Species on 3 February 2009.
  8. ^ Unassigned Euheterodonta.  Retrieved through: World Register of Marine Species on 12 July 2009.
  9. ^ Anomalodesmata Dall, 1889.  Retrieved through: World Register of Marine Species on 9 July 2010.
  10. ^ Myoida Stoliczka, 1870.  Retrieved through: World Register of Marine Species on 9 July 2010.
  11. ^ Lucinoida Gray, 1854.  Retrieved through: World Register of Marine Species on 10 July 2010.
  12. ^ Veneroida Gray, 1854.  Retrieved through: World Register of Marine Species on 9 July 2010.