Solid shell up to 4.5cm in length. Light yellow, orange, pink or fawn - sometimes banded. The inside of the shell is orange, tending to be lighter towards the edges. The shell surface is sculptured with concentric ridges with the left valve smoother than right. Cruciform muscle scars sometimes distinct.
- Marked ridge (keel) running from the beaks to the posterior of the shell
- Lower margin of pallial sinus confluent with pallial line
- Solid shell
- Angulus tenuis is brittle and ridge from the beaks is less obvious
Found sublittorally in muddy sand. Lies on left valve (causing this to be smoother).
From the the south of Norway to the Iberian Peninsula