Nucula atacellana Schenck, 1939
Nuculoidea : Nuculidae |
| Tebble name: | n/a |
| Smith & Heppell name: | Nucula atacellana Schenck, 1939 |
To size: To 5mm. Shell Structure: Relatively solid. Equivalve: Equivalve. Equilateral: Slightly inequilateral, the beaks lie approximately 45% of dorsal margin length from posterior. Tumidity: Conspicuously tumid. Outline: Rounded triangular to oval: antero-dorsal margin slightly rounded and gently sloping; postero-dorsal margin almost straight to very slightly rounded and steeply sloping; slight angled junction with posterior margin; anterior margin broadly rounded, ventral margin deeply rounded. Escutcheon short, relatively broad, elliptical, raised, with moderately defined edges; lunule raised, long, broadly elliptical with moderately defined edges; Umbo prominent, moderately broad, rounded, projecting above the dorsal margin.
Sculpture: Finely decussate, sculpture of numerous, closely-spaced, radial riblets, and well defined, closely spaced, raised concentric lines. Prodissoconch smooth, prominent with well defined margin, post-larval shell also smooth. Margin: Inner margin crenulate in correspondence to riblets. Ligament: Internal, opisthodetic, with a rounded triangular ligament seated in a well-developed resilifer. A thin, barely visible, external ligament lies anterior to the beaks. Hinge: Taxodont: Solid, continuous hinge plate, narrow below the beaks, broadening towards the anterior and posterior ends, with a well-developed resilifer. Teeth, robust, moderately long and blunt, usually 7-8 posterior and 9-10 anterior of the resilifer. Periostracum: Silky, straw-coloured, slightly iridescent. Prodissoconch and post-larval shell white. Colour: White to bluey grey, slightly nacreous. Inside of shell nacreous.
Distribution & Ecology
Depth Range
Bathyal (500 - 2000m)
Abyssal Rise (2000 - 4000m)
Additional Information & Related Species
Related Species
Nuculoidea : Nuculidae
References
Listed are literature citing Nucula atacellana Schenck, 1939. Reference containing the species Type Description is highlighted.
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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. |
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Rhind P.M. & Allen J.A. 1992. Studies on the deep-sea Protobranchia (Bivalvia): the family Nuculidae. Bulletin of the British Museum of Natural History. 58 (1): 61-93. |
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Schenck G 1939. Revised nomenclature for some nuculid pelecypods. Journal of Paleontology. 13: 21-41. pls 5-8. |
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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