Shells of this species are small, wedge shaped (cuneate), quite solid and chalky. Valve rounded apex (umbo) in posterior third of shell. Exterior covered with light brown coating (periostracum), may be darker in posterior area. Exterior sculpture of numerous fine concentric lines (striae). Right valve with single strong tooth, ligament internal. Shell up to 6 mm across.
This species can occur in large numbers. Like other species in this family group of bivalves, these tiny animals often have a commensal relationship with invertebrates including other bivalves, crustaceans, echinoderms and worms.
On sand banks and in muddy areas in protected bays.
- DSE Advisory List : Not listed
- EPBC Act 1999 : Not listed
- IUCN Red List : Not listed