RareDistributed from Norway south to the Iberian Peninsula and into the Mediterranean.
- The teeth are small in the middle of the hnge getting larger towards the edges
- The left valve is more convex than the right
Solid shell up to 0.5cm in length. It is dirty white in colour with pale yellow periostracum. The inside of the shell is white. The surface is sculptured with fine concentric lines and radiating ridges causing the surface to appear reticulated.