Astarte borealis (Schumacher, 1817)
Crassatelloidea : Astartidae |
| Tebble name: | Astarte borealis Schumacher |
| Smith & Heppell name: | Tridonta borealis Schumacher, 1817 |
To size:
To 45 mm.
Shell Structure:
Solid.
Equivalve:
Equivalve.
Equilateral:
Sub-equilateral, beaks just in front of midline.
Tumidity:
Somewhat compressed.
Outline:
Subovate to subelliptical, slightly trigonal but beaks mostly eroded. Dorsal margins sloping steeply, lunule and escutcheon well developed both rather narrow. Anterior a little more broad and rounded than posterior.
Sculpture:
Of dense co-marginal lines but obscured by the heavy periostracum.
Margin:
Inner margin smooth.
Ligament:
External, prominent as a raised band behind the beaks and extending about 1/2 length of escutcheon.
Hinge:
LV with 3 cardinal teeth, the posterior thin, a prominent "lateral" flange and groove are present above the posterior adductor scar; a small "lateral" ridge is present above the anterior adductor scar. RV with 2 (3) cardinal teeth, a posterior "lateral" flange and an anterior "lateral" groove.
Pallial Musculature:
Pallial line impressed, entire; adductor scars impressed, oval, relatively large.
Periostracum:
Periostracum persistent, very thick, co-marginally striated, dark brown to almost black in colour.
Colour:
Shell white.
Distribution & Ecology
Depth Range
Continental Margin Zone (200 - 500m)
Bathyal (500 - 2000m)
Additional Information & Related Species
Related Species
Crassatelloidea : Astartidae
References
Listed are literature citing Astarte borealis (Schumacher, 1817). Reference containing the species Type Description is highlighted.
|
Høpner Petersen G. 2001. Studies on some Arctic and Baltic Astarte species (Bivalvia, Mollusca). Bioscience. 52: 1-71. |
|
Schumacher C F 1817. Essai d’un nouveau système des habitations des vers testacés Scultz, Copenhagen. 288pp, 22pls. |
Resources
- Conchological Society
of Great Britain & Ireland
Provides resources for understanding, identifying, recording, and conserving molluscs - CLEMAM
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.
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