Species Account

Pseudamussium peslutrae (Linnaeus, 1771)

Pectinoidea : Pectinidae

Tebble name: Chlamys (Pseudamussium) septemradiatum (Müller)
Smith & Heppell name: Pseudamussium septemradiatum (Müller, 1776)

To size: To 50mm. Shell Structure: Solid. Equivalve: Inequivalve, RV slightly more convex than LV. Equilateral: Inequilateral. Outline: Subcircular, (umbonal angle about 95°), ears almost equal in size. Contour: RV with a weak byssal notch, ctenolium weakly developed.

Sculpture: Typically with 5-7 broad radial undulations but may number up to 10, those on right lower valve more broad. Initially with weakly spined radial riblets, these fading in typical shells; some with persistent radial riblets giving a weakly crenulated margin. Colour: Upper (LV) reddish-brown often with paler blotches or zigzag markings. Lower (RV) paler, often dirty white.

Distribution & Ecology

Free living on muddy mixed sediments at shelf to upper slope depths. Most records from the west of Scotland (common in the Clyde Sea Area) and scattered in northern Irish Sea and northern North Sea.

Depth Range
Continental Shelf (to 200m)
Continental Margin Zone (200 - 500m)

Additional Information & Related Species


Listed are literature citing Pseudamussium peslutrae (Linnaeus, 1771). 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.
Dijkstra H.H. 1999. Type specimens of the Pectinidae (Mollusca: Bivalvia) described by Linnaeus (1758-1771). Zoological Journal of the Linnean Society. 125: 383-443.
Dijkstra HH & Goud J 2002. Pectinoidea (Bivalvia, Propeamussiidae & Pectinidae) collected during the Dutch CANCAP and MAURITANIA expeditions in the south-eastern region of the North Atlantic Ocean. Basteria. 66: 31-82.
Linnaeus C 1771. Mantissa plantarum Holmiae, Salvius. 588pp.


  • Conchological Society of Great Britain & Ireland
    Provides resources for understanding, identifying, recording, and conserving molluscs
    Check List of European Marine Mollusca
  • MarLIN
    The Marine Life Information Network for Britain and Ireland (MarLIN) provides information for marine environmental management, protection and education. It is a centre of excellence in spatially based and time-series marine biological information and supports good stewardship in the marine environment.
  • NBN Gateway
    National Biodiversity Network's Gateway. Use it to explore UK biodiversity data, as contributed by participating data providers.
  • BivAToL
  • MarBEF
  • Malacological Society
  • Unitas Malacologica
  • Census of Marine Life
  • MarBEF
    MarBEF, a network of excellence funded by the European Union and consisting of 94 European marine institutes, is a platform to integrate and disseminate knowledge and expertise on marine biodiversity, with links to researchers, industry, stakeholders and the general public.

Record last modified: 17/05/2016