Inside of right valve
Species
Photographer / copyright holder
Steve Wilkinson
Specimen collected by D'arcy W. Thompson Coll from North Berwick. Length = 17mm.
Musculus discors
<em>Musculus discors</em> (Linnaeus, 1767)
Inside of left valve
Species
Photographer / copyright holder
Steve Wilkinson
Specimen collected by D'arcy W. Thompson Coll from North Berwick. Length = 17mm.
Outside of right valve
Species
Photographer / copyright holder
Steve Wilkinson
Specimen collected by D'arcy W. Thompson Coll from North Berwick. Length = 17mm.
Outside of left valve
Species
Photographer / copyright holder
Steve Wilkinson
Specimen collected by D'arcy W. Thompson Coll from North Berwick. Length = 17mm.
Musculus discors
Distribution and status
CommonNorway south to the Mediterranean
Ecology and behaviour
Found under rocks and among algae. Spins together algae to create a nest from where it filters phytoplankton
Key identification features
- Anterior region of shell has 8-12 ribs; posterior 30-40 ribs
- Periostracum is pale green of brown
Taxon version key
[NBNSYS0000176548]
Sort order
9400
Taxonomic group
Marine bivalve
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Brittle shell up to 1.5cm in length. The shell is yellow brown in colour but this is obscured by thick green or brown periositracum. The inside is generally white but sometimes pale purple. The surface of the shell is sculptured with fine concentric lines and radiating ribs. Margin of the shell is crenulate.