Sphaerium sp.

Systematics :

Kingdom: Animals (Animalia)
Phylum: Molluscs (Mollusca)
Class: Bivalve mollusc (Bivalvia)
Subclass: Heterodonta
Family: Sphaeriidae
Genus: Sphaerium
Species (sp.): Sphaerium sp.

Norwegian name: Kulemusling