Bathyarca frielei (Friele, 1877)
Arcoidea : Arcidae |
| Tebble name: | n/a |
| Smith & Heppell name: | Bathyarca frielei (Friele, 1877) |
To size:
To 5mm.
Shell Structure:
Thin, fragile, semi-transparent.
Equivalve:
Slightly inequivalve, left valve larger, right valve sitting inside left valve.
Equilateral:
Inequilateral, beaks just in front of midline.
Tumidity:
Not inflated.
Outline:
Roundly wedge-shaped (length only slightly greater than height), umbos low. Dorsal margin long, straight; posterior broadly rounded, merging into obliquely sloping ventral margin byssus indentation indistinct; anterior narrowly rounded.
Contour:
Dorsal area narrow, edge of hinge plate raised; posterior angle indistinct, rounded.
Sculpture:
Very weak, reticulate, numerous radial raised lines dominant over numerous comarginal ridges; sculpture more prominent on the smaller right valve.
Margin:
Inner margin of larger left valve weakly crenulate adjacent to a submarginal groove; right valve smooth.
Hinge:
Very weak, taxodont, teeth in two series set on a gently curved hinge plate, anterior set with up to 5 teeth, posterior set up to 5; posterior teeth subparallel to dorsal margin anterior teeth oblique.
Pallial Musculature:
Obscure but anterior adductor scar slightly smaller than posterior.
Periostracum:
Of fragile, pale straw coloured, very short bristles in a primarily radial arrangement.
Colour:
White, semitransparent.
Distribution & Ecology
Depth Range
Bathyal (500 - 2000m)
Abyssal Rise (2000 - 4000m)
Additional Information & Related Species
Key Features & Similar Species
Related Species
Arcoidea : Arcidae
References
Listed are literature citing Bathyarca frielei (Friele, 1877). Reference containing the species Type Description is highlighted.
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Bouchet P. & Warén A 1979. The abyssal molluscan fauna of the Norwegian Sea and its relation to other faunas. Sarsia. 64: 211-243. |
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Friele H 1877. Preliminary report on Mollusca from the Norwegian North Atlantic Expedition in 1876. Nyt Mag. naturvid. 23: 1-10. |
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Oliver G & Allen J A 1980. The Functional and Adaptive Morphology of the Deep-Sea Species of the Arcacea (Mollusca: Bivalvia) from the Atlantic. Philosophical Transactions of the Royal Society of London Series B. 291: 45-76. |
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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