About Laevicardium crassum (Gmelin, 1791)
The shell of Laevicardium crassum can reach a length of about 7.5 centimetres (3.0 in). The exterior of the shell is white or light yellow, with occasional dark markings. The shell surface is smooth, with 40 to 50 ribs and a crenulated margin. This species occurs in the Northeast Atlantic and the Mediterranean, where it is found at depths between 9 and 200 meters.