Atrina rigida

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Atrina rigida
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Bivalvia
Order:	Pteriida
Family:	Pinnidae
Genus:	Atrina
Species:	A. rigida
Binomial name
Atrina rigida (Lightfoot, 1786)
Synonyms
Pinna rigida Lightfoot, 1786

Atrina rigida, commonly called the rigid pen shell, is a species of bivalve mollusc in the family Pinnidae.