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.
- Conchological Society
of Great Britain & Ireland
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Check List of European Marine Mollusca
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- Malacological Society
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