(Gmelin, 1791)
Description:
The shell has a chalky, dull surface. The periostracum is present near the margins. The form is more elongated and flatter than that of Macoma balthica..
Size:
Up to 44 mm long.
Colour:
Fawn.
Habitat:
Lives on fine sand and mud bottoms. From the intertidal zone down to several hundred metres.
Distribution:
A northern Atlantic, Arctic species. In Europe records from Iceland and Norway (Distr. M. calcarea). In western Atlantic south to New York.