Pisidium
Genus of bivalves / From Wikipedia, the free encyclopedia
Pisidium is a genus of very small or minute freshwater clams known as pill clams or pea clams, aquatic bivalve molluscs in the family Sphaeriidae, the pea clams and fingernail clams.
Quick Facts Pisidium, Scientific classification ...
Pisidium | |
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External view of the left valve of Pisidium pseudosphaerium | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Mollusca |
Class: | Bivalvia |
Order: | Sphaeriida |
Superfamily: | Sphaerioidea |
Family: | Sphaeriidae |
Genus: | Pisidium C. Pfeiffer, 1821 |
Species | |
See text | |
Synonyms | |
Tetragonocyclas Pirogov & Starobogatov, 1974 |
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In some bivalve classification systems, the family Sphaeriidae is referred to as Pisidiidae, and occasionally Pisidium species are grouped in a subfamily known as Pisidiinae.