Thin shell up to 3mm in length. The shell is translucent but obscured by cream coloured periostracum. The surface of the shell is sculptured with radiating ribs crossed by crenulated concentric ridges.
Key identification features
- The hinge line of the shell is serrated
- The shell surface has distinctive crenulated ridges
Distribution and status
RareDisributed from northern Norway to the Iberian Peninsula and into the Mediterranean.