Species Account

Saxicavella jeffreysi Winckworth, 1930

Galeommatoidea : Basterotiidae

Tebble name: Saxicavella jeffreysi Winckworth
Smith & Heppell name: Saxicavella jeffreysi Winckworth, 1930

To size: To 10mm. Shell Structure: Thin, rather fragile. Equivalve: Equivalve. Equilateral: Inequilateral, beaks distinctly in front of midline. Tumidity: Not inflated. Outline: Obliquely rhomboidal, anterior much narrower than posterior, posterior dorsal margin distinct rather straight, posterior margin obliquely subtruncate, ventral margin almost straight inclined to narrowly rounded anterior. Contour: Posterior area set off by oblique rounded ridge running from umbo to post-ventral margin (this much stronger in juvenile shells). Anterior similar but less distinct.

Sculpture: Of fine concentric lines and growth stops. Margin: Inner margin smooth. Ligament: External as a narrow band behind the beaks. Hinge: RV with a flange-like cardinal tooth fitting into corresponding depression in LV. Pallial Musculature: Pallial line wide, pallial sinus absent. Periostracum: Often persistent, yellowish to pale brown. Colour: Dirty white.

Distribution & Ecology

Of wide but sporadic occurrence across the entire shelf. North Sea records are of valves only. Lives in mud and muddy sand.

Depth Range
Continental Shelf (to 200m)

Additional Information & Related Species

Related Species

Galeommatoidea : Basterotiidae


Listed are literature citing Saxicavella jeffreysi Winckworth, 1930. Reference containing the species Type Description is highlighted.

Van Aartsen JJ & Bogi C 1998. European Marine Mollusca: Notes on less well-known species. XIV. Saxicavella angulata (S.V. Wood, 1857). La Conchiglia. 289: 56-58.
Winckworth R 1930. Notes on nomenclature 5. Some new names for British marine bivalves. Proceedings of the Malacological Society of London. 19: 14-15.


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Record last modified: 22/03/2016