Papillicardium papillosum (Poli, 1795)Cardioidea : Cardiidae
To size: To 15mm. Shell Structure: Thin shelled but robust, opaque. Equivalve: Equivalve. Equilateral: Inequilateral, beaks only just in front of the midline. Tumidity: Plump. Outline: Subcircular a little quadrate; anterior and posterior dorsal margins of approximate equal length sloping; Posterior margin gently curved; ventral and anterior margins a broad even curve.
Sculpture: 24-27 radial riblets, interspaces narrower than riblets; Interspaces with prominent notches. Anterior riblets with broad blunt cross bars; median and posterior riblets with erect rounded nodules (papillae). Margin: Crenulated by interlocking ribs and interspaces. Furrows extending into the umbonal cavity. Ligament: Prominent, on short nymph. Hinge: Moderately developed, RV with 2 anterior laterals, 1 posterior lateral, 2 cardinals. LV with single anterior and posterior laterals and 2 cardinals. Pallial Musculature: Obscure. Periostracum: Thin. Colour: Dirty white some with pink/brown blotches; internal white or with pink radial bands.
Distribution & Ecology
A southern species reaching the Channel Islands with valves only from off Devon and Cornwall.
Continental Shelf (to 200m)
Juveniles & Similar Species
Key Features & Similar Species
Listed are literature citing Papillicardium papillosum (Poli, 1795). Reference containing the species Type Description is highlighted.
Poli J X 1795. Testacea Utriusque Siciliae eorumque historia et anatome. vol. 2 Parma, Regio Typographeio. i-lxxvi. 75-264, pls 19-39.
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.
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