Very solid shell up to about 13cm in length. The surface is sculptured with numerous irregular fine concentric raised lines. The outside of the shell is white, yellow or brown. The inside is white, soemetimes with a pink tint. The pallial line is not indented with a pallial sinus.
- Pallial line not indented with a pallial sinus
- Crenulations on hinge plates in from of the anterior cardinal tooth.
Shallow burrower in muddy sand where it feeds by filtering phytoplankton.
CommonDistributed from Norway south to the Bay of Biscay