Allogramma formosa (Jeffreys, 1882)
Pandoroidea : Lyonsiidae |
| Tebble name: | n/a |
| Smith & Heppell name: | Lyonsia formosa Jeffreys, 1881 |
To size: To 15mm. Shell Structure: Thin, fragile. Equivalve: Equivalve. Equilateral: Inequilateral, beaks slightly in front of midline. Tumidity: Moderate. Outline: Subrectangular; anterior rounded, posterior truncate, ventral margin gently curved, dorsal margins long sloping gently. Contour: Umbos prominent; posterior area set off by a radial carina running from the beaks to the posterior ventral junction.
Sculpture: Anterior area with few oblique weak ridges, anterior and median areas with dense, radial rows of minute spines, these larger on dorsal anterior area; posterior area with radial riblets bearing spines, these becoming larger on dorsal area and projecting above the margin. Margin: Inner margin smooth. Ligament: Small, set on a shallow internal lithodesma below the beaks. Hinge: Lacking teeth. Pallial Musculature: Obscure. Periostracum: Obscure. Colour: White.
Distribution & Ecology
Depth Range
Bathyal (500 - 2000m)
Abyssal Rise (2000 - 4000m)
Additional Information & Related Species
Juvenile Description
Related Species
Pandoroidea : Lyonsiidae
References
Listed are literature citing Allogramma formosa (Jeffreys, 1882). Reference containing the species Type Description is highlighted.
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Jeffreys J.G. 1882. On the Mollusca procured during the ‘Lightning’ and ‘Porcupine’ Expeditions, 1868-70. (Part IV). Proceedings of the Zoological Society of London. 1881: 921-952. |
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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. |
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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