Right valve of Angulus tenuis showing colour variation
Species
Photographer / copyright holder
Steve Wilkinson
Specimen collected by Celia Pain from Sandwich Bay, Kent. Length = 28mm.
Angulus tenuis
<em>Angulus tenuis</em> (da Costa, 1778)
Right valve of Angulus tenuis showing colour variation
Species
Photographer / copyright holder
Steve Wilkinson
Specimen collected by Celia Pain from Sandwich Bay, Kent. Length = 28mm.
Valve pair of Angulus tenuis
Species
Photographer / copyright holder
Steve Wilkinson
Specimen collected by Celia Pain from Sandwich Bay, Kent. Length = 28mm.
Inside of left valve of Angulus tenuis showing pallial sinus
Species
Photographer / copyright holder
Steve Wilkinson
Specimen collected by Celia Pain from Sandwich Bay, Kent. Length = 28mm.
Left valve of Angulus tenuis
Species
Photographer / copyright holder
Steve Wilkinson
Specimen collected by Celia Pain from Sandwich Bay, Kent. Length = 28mm.
Right valve of Angulus tenuis
Species
Photographer / copyright holder
Steve Wilkinson
Specimen collected by Celia Pain from Sandwich Bay, Kent. Length = 28mm.
Angulus tenuis
Distribution and status
Common. From Nowegian Sea and Baltic down to the Mediterranean and Atlantic coast of Morocco.
The map provided here shows the distribution of the species based on Conchological Society data.
Ecology and behaviour
Fine sand especially around ELWS. Burrows down to a depth of about 5-15 cm but moves nearer the surface as the tide comes in. Sometimes found in high densities of up to 2000 per square metre. Feeds on organic detritus picked up through the siphon.
Similar species
- Angulus squalidus is more solid and possesses a more marked ridge
Key identification features
- Brittle shell
- Faint ridge running from beak to posterior of shell
- Lower margin of pallial sinus confluent with pallial line
Taxon version key
[NBNSYS0000173825]
Sort order
10580
Taxonomic group
Marine bivalve
Fragile shell up to 2.5cm in length. Coloyr can be white, pink, rose, orange or yellow both inside and out. The surface is sculptured with concentric ridges. Pallial sinus deep and partially confluent with pallial line; cruciform muscle scars sometimes distinct.