Yoldiella fabula Allen, Sanders & Hannah, 1995
Nuculanoidea : Nuculanidae |
| Tebble name: | n/a |
| Smith & Heppell name: | n/a |
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:
To 3.1mm.
Shell Structure:
Thin, fragile.
Equivalve:
Equivalve.
Equilateral:
Slightly inequilateral, the beaks lie 40-45% of dorsal margin length from anterior.
Tumidity:
Moderately inflated.
Outline:
Elongate-oval- ‘bean-shaped’: dorsal margins gently curved and slightly crimped; anterior and posterior margins rounded; ventral margin long, shallowly rounded. Umbo relatively broad, prominent, projecting above the dorsal margin, situated posterior of midline.
Sculpture:
Fine, regular striations, coarser towards the ventral margin.
Margin:
Smooth.
Ligament:
Slightly opisthodetic, attached internally to the underside of the beak without a projecting chondrophore or resilifer.
Hinge:
Taxodont: long, curved, relatively strong, v-shaped; 7-8 posterior and 8-9 anterior, chevron-shaped teeth on either side of the ligament.
Periostracum:
Silky, yellowish in colour.
Colour:
Translucent white.
Additional Characters:
The hind-gut forms a simple, rounded loop on the right side of the body.
Distribution & Ecology
Allen et al. (1995) record Y. fabula from most of the Atlantic deep-sea basins in depths ranging from 2503-5223m, including 2 stations in Rockall Trough.
Depth Range
Bathyal (500 - 2000m)
Abyssal Rise (2000 - 4000m)
Abyssal Plain (4000m +)
Additional Information & Related Species
Related Species
Nuculanoidea : Nuculanidae
References
Listed are literature citing Yoldiella fabula Allen, Sanders & Hannah, 1995. Reference containing the species Type Description is highlighted.
|
Allen, J.A., Sanders, H.L. & Hannah, F. 1995. Studies on the deep-sea Protobranchia (Bivalvia); the subfamily Yoldiellinae. Bulletin of the British Museum of Natural History. 61: 11-90. |
|
Killeen I.J. & Turner J. 2009. Yoldiella and Portlandia (Bivalvia) from the Faroe-Shetland Channel and Rockall Trough, Northeast Atlantic. Journal of Conchology. 39 (6): 733-778. |
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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