Acanthocardia paucicostata (G B Sowerby II, 1841)
Cardioidea : Cardiidae
To size: To 50mm. Shell Structure: Thin but not fragile. Equivalve: Equivalve. Equilateral: Slightly inequilateral, beaks just infront of midline. Tumidity: Inflated. Outline: Broadly oval remaining longer than high, anterior dorsal margin rather pronounced, posterior margin only slightly less rounded than anterior. Contour: Umbonate, posterior angle weak.
Sculpture: 16-18 widely spaced, strong radial ribs, each carrying a row of short spines arising from the midline of the rib. In early stages, the triangular shaped spines are joined to each other giving a serrated profile but soon the spines are separated. The spines are spathulate with their upper surfaces excavated. Overall with a strong concentric rugose sculpture most prominent in interspaces. Margin: Deeply crenulated, interlocking ends of ribs and interspaces. Ligament: External, a prominent raised band set on a prominent nymph. Hinge: RV with 2 cardinals the posterior slightly the larger; 2 anterior and 1 posterior laterals: LV with 2 cardinals and single anterior and posterior laterals. Pallial Musculature: Pallial line entire. Periostracum: Thin. Colour: White to tan.
Distribution & Ecology
Continental Shelf (to 200m)
Additional Information & Related Species
Cardioidea : Cardiidae
Listed are literature citing Acanthocardia paucicostata (G B Sowerby II, 1841). Reference containing the species Type Description is highlighted.
Goud J 2002. De Tere hartschelp Acanthocardia paucicostata (Sowerby) (Bivalvia: Heterodonta: Cardiidae) nu in de Grevelingen gevestigd?. Basteria. 66: 106.
Sowerby G B II 1841. On some new species of the genus Cardium chiefly from the collection of H Cuming Esq.. Proceedings of the Zoological Society London. VIII:
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