Sphaerium

Sphaerium
Sphaerium corneum
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.

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.

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