Parvicardium exiguum var subangulatum (Scacchi, 1833)
Cardioidea : Cardiidae
To size: To 10mm. Shell Structure: Thin but robust. Equivalve: Equivalve. Equilateral: Inequilateral, beaks distinctly in front of the midline. Tumidity: Moderate. Outline: Sub quadrate; anterior dorsal margin very short sloping and a little excavated; posterior dorsal margin short. Posterior margin long, almost straight; ventral margin gently curved, anterior roundly angled. Contour: Posterior angle distinct, posterior area broad and flattened. Lunule oval, smooth.
Sculpture: As typical form but largely lacking any nodules or spines on ribs. Margin: Crenulated by interlocking ribs and interspaces. Furrows extending into the umbonal cavity in most specimens. Ligament: Prominent, on short nymph. Hinge: Weak, RV with 2 anterior laterals, 1 posterior lateral, 2 cardinals. LV with single anterior and posterior laterals and 2 cardinals. Pallial Musculature: Obscure. Periostracum: Persistent often as a fringe on the ribs. Colour: Mostly coloured mottled, tan, greenish brown, darker brown.
Distribution & Ecology
Continental Shelf (to 200m)
Additional Information & Related Species
Similar in outline and contour but a thinner shell largely lacking nodules and incisions. Mostly coloured mottled, tan, greenish brown darker brown.
Cardioidea : Cardiidae
Listed are literature citing Parvicardium exiguum var subangulatum (Scacchi, 1833). Reference containing the species Type Description is highlighted.
Scacchi A 1833. Osservazioni Zoologiche. 1&2: 3-27.
Van Aartsen JJ & Goud J 2000. European marine mollusca: notes on less well-known species. XV. Notes on Lusitanian species of Parvicardium Monterosato, 1884, and Afrocardium richardi (Audouin, 1826) (Bivalvia: Heterodonta: Cardiidae. Basteria. 64: 171-186.
- Conchological Society
of Great Britain & Ireland
Provides resources for understanding, identifying, recording, and conserving molluscs
Check List of European Marine Mollusca
The Marine Life Information Network for Britain and Ireland (MarLIN) provides information for marine environmental management, protection and education. It is a centre of excellence in spatially based and time-series marine biological information and supports good stewardship in the marine environment.
- NBN Gateway
National Biodiversity Network's Gateway. Use it to explore UK biodiversity data, as contributed by participating data providers.
- Malacological Society
- Unitas Malacologica
- Census of Marine Life
MarBEF, a network of excellence funded by the European Union and consisting of 94 European marine institutes, is a platform to integrate and disseminate knowledge and expertise on marine biodiversity, with links to researchers, industry, stakeholders and the general public.