Modiolus modiolus
Originator: Stein Mortensen
Systematics :
Kingdom: Animals (Animalia)
Phylum: Molluscs (Mollusca)
Class: Bivalve mollusc (Bivalvia)
Subclass: Pteriomorpha
Family: Mytilidae
Genus: Modiolus
Species: Modiolus modiolus
Norwegian name: O-skjell
Confusion species: Mytilus edulis