Microgloma tumidula (Monterosato, 1880)
Nuculanoidea : Nuculanidae |
| Tebble name: | n/a |
| Smith & Heppell name: | Microgloma turnerae Sanders & Allen, 1973 |
Notes on Nomenclature
Killeen & Turner (2009) use Nuculanidae instead of Yoldiidae in agreement with Ockelmann & Warén (1998) who explan that the distinguishing characters between these two families has never been well documented. Until the Yoldiidae can be clearly distinguished from the Nuculanidae we shall treat them under the single family Nuculanidae.
To size:
1-1.2 mm.
Shell Structure:
Minute, relatively solid.
Equivalve:
Equivalve.
Equilateral:
Slightly inequilateral, beaks situated to the posterior of midline, approximately 40-45% of total length from posterior end.
Tumidity:
Tumid.
Outline:
Oval, anteriorly extended; height of shell approximately 80% of the length; dorsal margin straight, very short posteriorly, longer anteriorly; posterior margin gently rounded, anterior margin extended and more strongly rounded; ventral margin rounded, lunule and escutcheon absent; umbo not prominent, projecting slightly above the dorsal margin, prodissoconch conspicuous.
Sculpture:
Very fine, regular concentric lines, increasing in prominence towards the ventral margin; also very faint radial lines.
Margin:
Smooth.
Ligament:
Internal, amphidetic, oval, sat in a simple resilifer below the beaks.
Hinge:
Taxodont: hinge relatively strong with 3 large, blunt, chevron-shaped teeth either side of the ligament.
Pallial Musculature:
Indistinct.
Periostracum:
Glossy, very pale straw coloured.
Colour:
Translucent white.
Additional Characters:
Elongated coils along the dorsum on both sides of the body.
Distribution & Ecology
Depth Range
Continental Margin Zone (200 - 500m)
Bathyal (500 - 2000m)
Abyssal Rise (2000 - 4000m)
Additional Information & Related Species
Related Species
Nuculanoidea : Nuculanidae
References
Listed are literature citing Microgloma tumidula (Monterosato, 1880). Reference containing the species Type Description is highlighted.
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Ockelmann K & Warén A 1998. Taxonomy of and biological notes on the bivalve genus Microgloma with comments on Protobranch nomenclature. Ophelia. 48(1): 1-24. |
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Sanders H L & Allen J A 1973. Studies on deep-sea Protobranchia (Bivalvia); prologue and the Pristiglomidae. Bulletin of the Museum of Comparative Zoology, Harvard. 145: 237-262. |
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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