Species Account

Cyrtodaria kurriana Dunker, 1861

Hiatelloidea : Hiatellidae

Tebble name: n/a
Smith & Heppell name: Cyrtodaria siliqua (Spengler, 1793)

To size: To 80 mm. Shell Structure: Becoming very thick with age. Equivalve: Equivalve. Equilateral: Inequilateral, beaks just behind midline in small shells far behind in large shells. Tumidity: Compressed. Outline: Elongate oval; posterior dorsal margin sub-parallel to ventral margin, shorter than anterior dorsal margin, which slopes more steeply; posterior margin bluntly rounded; anterior margin narrowly rounded; ventral margin long almost straight. Contour: Umbos very low, beaks frequently eroded.

Sculpture: Smooth with weak concentric lines and growth stops. Margin: Inner margin smooth. Ligament: External supported by a massive, dorsally projecting nymph. Hinge: Hinge without obvious teeth, faint irregular projection anterior to nymph. Pallial Musculature: Scars deeply impressed; pallial line entire except for a slight indentation below the posterior adductor scar; anterior adductor scar elongate, posterior adductor scar oval. Periostracum: Thick, persistent, brown to black in colour. Colour: Shell dirty white.

Distribution & Ecology

An Arctic species with only fossil shells known from European sites. Not living in British waters.

Depth Range
Continental Shelf (to 200m)

Additional Information & Related Species

Related Species


Listed are literature citing Cyrtodaria kurriana Dunker, 1861. Reference containing the species Type Description is highlighted.

Dunker W 1861. Beschreibung Neuer Mollusken. Malakozoologische Blätter. 8: 35-45.


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Record last modified: 22/03/2016