Heterodonta

Heterodonta
New Zealand cockles
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Bivalvia
Subclass: Heterodonta
Orders

†Cycloconchidae
Hippuritoida
†Lyrodesmatidae
†Redoniidae
Carditoida
Anomalodesmata
Myoida
Lucinoida
Veneroida

Heterodonta is a subclass of bivalve molluscs, including the clams and cockles.[1] They are distinguished by having the two halves of the shell be equally sized, 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]

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

Contents

2010 Taxonomy of the Heterodonta

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]

Order: Carditoida[6]

Infraclass: Euheterodonta[7]

Unassigned Euheterodonta[8]

Order: Anomalodesmata[9]

Order: Myoida[10]

Order: Lucinoida[11]

Order: Veneroida[12]

References

  1. ^ Heterodonta Neumayr, 1884.  Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=216 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.  Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=382255 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.  Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=382256 on 3 August 2010.
  7. ^ Euheterodonta Giribet in Taylor, Williams, Glover & Dyal, 2007.  Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=382296 on 3 February 2009.
  8. ^ Unassigned Euheterodonta.  Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=382297 on 12 July 2009.
  9. ^ Anomalodesmata Dall, 1889.  Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=254 on 9 July 2010.
  10. ^ Myoida Stoliczka, 1870.  Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=245 on 9 July 2010.
  11. ^ Lucinoida Gray, 1854.  Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=489106 on 10 July 2010.
  12. ^ Veneroida Gray, 1854.  Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=217 on 9 July 2010.