Ouside of left valve
Species
Photographer / copyright holder
Steve Wilkinson
Length = 38mm. Collected from Exmouth Beach, Dorset on 29/09/2003 by Celia Paine.
<em>Barnea parva</em> (Pennant, 1777)
Extends from the south and south west costs of the British Isles south to the Mediterranean.
The map provided here shows the distribution of the species based on Conchological Society data.
Bores into slate,linite, chalk, lias, marl, red sandstone and cement stone.
Shell up to about 4cm in length. The shell is mainly white though often discoloured by bored rock attached to the surface. Periostracum light yellow. Shell is sculptured with concentric ridges and radiating ribs (particularly at the anterior of the shell).