Sphaerium

From Wikipedia, the free encyclopedia
Jump to: navigation, search
Sphaerium
Sphaerium corneum.jpg
Sphaerium corneum
Freshwater Fingernail Clam.gif
Live Sphaerium sp. moving around with its foot. Collected from a pond in Portland, Oregon
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Bivalvia
Subclass: Heterodonta
Order: Veneroida
Suborder: Sphaeriacea
Family: Sphaeriidae
Genus: Sphaerium
Scopoli, 1777
Species

See text.

Sphaerium is a genus of very small freshwater clams, aquatic bivalve molluscs in the family Sphaeriidae, known as the fingernail clams. The small clams in this genus are unusual in that many of them, such as Sphaerium corneum, can climb around underwater on aquatic plants, using their long and strong foot.

Species[edit]

  • Subgenus Nucleocyclas Alimov & Starobogatov, 1968
  • Subgenus Parasphaerium Alimov & Starobogatov, 1968
  • Subgenus Cyrenastrum Bourguignat, 1854
  • Without subgenus
  • Extinct

References[edit]

  1. ^ Nicayeniz, F., Lange, C.N. & Ngereza, C. 2004. Sphaerium bequaerti. In: IUCN 2006. 2006 IUCN Red List of Threatened Species. <www.iucnredlist.org>. Downloaded on 23 March 2007. http://www.iucnredlist.org/search/details.php/44255/summ
  2. ^ Sphaerium rhomboideum at mussel-project.uwsp.edu
  3. ^ Lange, C.N. & Ngereza, C. 2004. Sphaerium stuhlmanni. In: IUCN 2006. 2006 IUCN Red List of Threatened Species. <www.iucnredlist.org>. Downloaded on 23 March 2007. http://www.iucnredlist.org/search/details.php/44256/summ
  4. ^ Loris S. Russell (1976). "Pelecypods of the Hell Creek Formation (Uppermost Cretaceous) of Garfield County, Montana". Canadian Journal of Earth Sciences. 13 (2): 365–388. doi:10.1139/e76-039. 

External links[edit]