Species Account

Cyclopecten ambiannulatus Schein, 1989

Pectinoidea : Propeamussiidae

Tebble name: n/a
Smith & Heppell name: n/a

To size: To 7 mm. Shell Structure: Fragile, semitransparent or opaque. Equivalve: LV slightly more convex than RV. Equilateral: Equilateral. Tumidity: Compressed. Outline: Disc circular; anterior ears slightly larger and more demarcated from disc than posterior ears. Byssal notch well developed, ctenolium absent.

Sculpture: Of closely and regularly spaced co-marginal fine lamellae on both valves. Colour: Shell white.

Distribution & Ecology

A deep water species known from the Porcupine Sea Bight, Bay of Biscay and off western Iceland at bathyal and upper abyssal depths, 500-2200m.

Depth Range
Bathyal (500 - 2000m)
Abyssal Rise (2000 - 4000m)

Additional Information & Related Species


Listed are literature citing Cyclopecten ambiannulatus Schein, 1989. Reference containing the species Type Description is highlighted.

Dijkstra H, Warén A & Gudmunsson G 2009. Pectinoidea (Mollusca: Bivalvia) from Iceland. Marine Biology Research. 5: 207-243.
Olabarria C. 2005. Patterns of bathymetric zonation of bivalves in the Porcupine Sea Bight and adjacent abyssal plain, NE Atlantic. Deep-Sea Research I. 52: 15-31.
Schein E 1989. Pectinidae (Mollusca, Bivalvia) bathyaux ey abyssaux des campagnes BIOGAS (Golfe de Gascogne) systématique et biogéographie. Annales de l’Institut Océanographique Nouvelle Série. 65: 59-125.


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Record last modified: 17/05/2016