Katadesmia cuneata (Jeffreys, 1876)
Nuculanoidea : Malletiidae |
| Tebble name: | n/a |
| Smith & Heppell name: | Malletia cuneata Jeffreys, 1876 |
To size:
To 10mm.
Shell Structure:
Thin, fragile.
Equivalve:
Equivalve.
Equilateral:
Inequilateral, beaks situated to the anterior of midline, approximately 35-40% of total length from anterior end.
Tumidity:
Slightly inflated.
Outline:
Elongate-oval: antero-dorsal margin short, gently sloping; anterior end well rounded; postero-dorsal margin long, straight and slightly sloping, with a dorsal margin - posterior margin junction; posterior end slightly pointed weakly rostrate especially in larger specimens. Ventral margin long, shallowly rounded, usually with a straight section in the centre. Umbo broad, moderately prominent, and slightly pointed.
Sculpture:
Virtually smooth, with only very faint, closely spaced concentric lines.
Margin:
Smooth.
Ligament:
External, opisthodetic, well-developed, very short with the posterior part 3-4 times the length of the anterior part.
Hinge:
Taxodont: Hinge plate broadens away from the umbos, sloping slightly to the anterior and posterior. Fat, chevron-shaped teeth up to 18 in posterior and 12 in anterior.
Periostracum:
Glossy, greyish.
Colour:
Translucent white.
Additional Characters:
The hind-gut forms a simple, rounded loop on the right side of the body.
Distribution & Ecology
Depth Range
Abyssal Rise (2000 - 4000m)
Abyssal Plain (4000m +)
Additional Information & Related Species
Related Species
Nuculanoidea : Malletiidae
References
Listed are literature citing Katadesmia cuneata (Jeffreys, 1876). Reference containing the species Type Description is highlighted.
|
Jeffreys J G 1876. New and peculiar Mollusca of the Pecten, Mytilus and Arca families, procured in the Valorous expedition. Annals and magazine of natural History. (4)18: 424-436. |
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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. |
|
Sanders H.L. & Allen J.A. 1985. Studies on deep sea Protobranchia (Bivalvia): the family Malletiidae. Bulletin of the Natural History Museum, London (Zoology). 49: 195-238. |
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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