Dacrydium ockelmanni Mattson & Warén, 1977
Mytiloidea : Mytilidae |
| Tebble name: | n/a |
| Smith & Heppell name: | Dacrydium ockelmanni Mattson & Warén, 1977 |
To size:
Very small to 4mm.
Shell Structure:
Fragile, hyaline.
Equivalve:
Equivalve.
Equilateral:
Inequilateral beaks close to anterior margin.
Tumidity:
Compressed.
Outline:
Outline modioliform, beaks subterminal; ventral margin long more or less straight; dorsal margins almost straight, anterior dorsal very short, anterior narrowly rounded and pronounced, posterior dorsal long sloping steeply relative to ventral margin; posterior and posterior ventral margins forming a smooth broad curve.
Contour:
Prodissoconch small about 140μm in diameter.
Sculpture:
Sculpture smooth except for scattered weak growth lines.
Margin:
Inner margin smooth.
Ligament:
Ligament small, internal, situated in a distinct sunken resilifer beneath the beaks.
Hinge:
Hinge plate narrow, ligament margin with up to 50 small dysodont teeth, these decreasing in size towards the beaks; a few small teeth are also present anterior of the beaks.
Pallial Musculature:
Anterior adductor scar about 1/2 size of posterior.
Periostracum:
Transparent.
Colour:
White, glassy.
Distribution & Ecology
Depth Range
Continental Margin Zone (200 - 500m)
Bathyal (500 - 2000m)
Additional Information & Related Species
Key Features & Similar Species
Related Species
Mytiloidea : Mytilidae
References
Listed are literature citing Dacrydium ockelmanni Mattson & Warén, 1977. Reference containing the species Type Description is highlighted.
|
Mattson S & Warén A 1877. Dacrydium ockelmanni sp. n. (Bivalvia: Mytilidae) in Western Norway. Sarsia. 63: 1-6. |
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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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Salas C & Gofas S 1997. Brooding and non-brooding Dacrydium (Bivalvia: Mytilidae): a review of the Atlantic species. Journal of Molluscan Studies. 63: 261-283. |
|
Warén A 1991. New and little known Mollusca from Iceland and Scandinavia. Sarsia. 76: 53-124. |
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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