Species Account

Cuspidaria subtorta (G O Sars, 1878)

Verticordioidea : Cuspidariidae

Tebble name: n/a
Smith & Heppell name: Cuspidaria subtorta (G O Sars, 1878)

To size: To 6mm. Shell Structure: Thin but robust. Equivalve: Equivalve. Equilateral: Equilateral, beaks close to midline. Tumidity: Strongly inflated. Outline: Body of shell oval, very deep, umbos prominent; anterior dorsal area indistinct, anterior and ventral broadly rounded. Rostrum shorter than body, dorsal margin weakly concave or upturned, ventral margin weakly concave, posterior sulcus weak.

Sculpture: Of fine concentric lines and growth stops, more prominent over tip of rostrum. Margin: Inner margin smooth. Ligament: Internal, small, beneath beaks. Hinge: RV with a single posterior lateral flange. Pallial Musculature: Obscure. Periostracum: Periostracum silky, minutely wrinkled, lamellar at margins and on tip of rostrum; pale brown in colour. Colour: Shell white.

Distribution & Ecology

A subarctic, north boreal species recorded from Norway, Iceland and Greenland but not yet confirmed from British waters although specimens from the margin west of Shetland may prove to be this.

Depth Range
Continental Margin Zone (200 - 500m)
Bathyal (500 - 2000m)

Additional Information & Related Species


Listed are literature citing Cuspidaria subtorta (G O Sars, 1878). Reference containing the species Type Description is highlighted.

Sars G O 1878. Bidrag til kundskaben om Norges arktiske fauna: 1. Mollusca regionis Arcticae Norvegiae. Oversigt over de i Norges arktiske region forekommende bloddyr A W Brogger, Christiana. 466pp, 34pls.


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Record last modified: 22/03/2016