Spisula solida (Linnaeus, 1758)Mactroidea : Mactridae
To size: To 45mm. Shell Structure: Thick, solid. Equivalve: Equivalve. Equilateral: Almost equilateral, beaks slightly to anterior. Tumidity: Quite tumid. Outline: Trigonal. Anterior dorsal margin slightly lower than posterior to rounded anterior and posterior margins. Ventral margin broadly rounded. Contour: No gape.
Sculpture: Fine concentric lines. Growth stages clear. Margin: Smooth. Ligament: External tiny, thin, dark brown band behind beaks. Internal set in triangular chondrophore. Hinge: LV three cardinals, which extend to halfway down the hinge plate, two set in an inverted v-shape, the third just behind then, small and fragile. Single anterior and posterior laterals. RV two cardinals and double anterior and posterior laterals. Upper and lower surfaces of LV laterals and inner surfaces of RV laterals are serrated. Pallial Musculature: Shallow pallial sinus not reaching the posterior end of chondrophore. Periostracum: Very thin, light brown. Colour: White.
Distribution & Ecology
Widely distributed on all coasts from low in the intertidal and nearshore depths. In clean sand especially on exposed coasts.
Continental Shelf (to 200m)
Juveniles & Similar Species
Key Features & Similar Species
Listed are literature citing Spisula solida (Linnaeus, 1758). Reference containing the species Type Description is highlighted.
Glémarec M. 1968. Distinction de deux Mactridae des Cotes Atlantiques Européennes: Spisula solida (Linné) et Spisula ovalis (Sowerby). Cahiers de biologie marins (Cah. biol. mar.). IX: 167-174.
Linnaeus C 1758. Systema Naturae. Editio decima. 1. Regnum Animale Holmiae, Laurentii Salvii. 824pp.
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