Heteranomia squamula (Linnaeus, 1758)
Anomioidea : Anomiidae |
| Tebble name: | Heteranomia squamula (Linnaeus) |
| Smith & Heppell name: | Heteranomia squamula (L., 1758) |
To size: To 15 mm. Shell Structure: Upper valve thin but robust, lower valve thinner often hyaline. Equivalve: Inequivalve, upper (left) valve convex; lower (right valve) flat. Equilateral: Inequilateral, beaks close to the middle of the dorsal margin. Outline: Upper subcircular but often very irregular and taking outline of substrate; lower valve similar with an oval byssus foramen. Contour: Often deformed to fit shape of attachment area.
Sculpture: Upper valve surface variable from almost smooth with concentric lines to bearing fluted spines; lower valve with comarginal lines and growth stops. Margin: Irregular but smooth. Ligament: In a half moon shaped pit beneath the beaks. Hinge: Obscure. Pallial Musculature: Upper valve with two scars the dorsal (byssus retrator) larger and joined with the smaller single adductor scar. Scars without faint radiating furrows. Lower valve with a single faint adductor scar. Periostracum: Obscure. Colour: Both valves white often semitransparent. Additional Characters: Anatomy: Ctendium with non-reflected filaments.
Distribution & Ecology
Depth Range
Intertidal
Continental Shelf (to 200m)
Continental Margin Zone (200 - 500m)
Bathyal (500 - 2000m)
Additional Information & Related Species
Related Species
Anomioidea : Anomiidae
References
Listed are literature citing Heteranomia squamula (Linnaeus, 1758). Reference containing the species Type Description is highlighted.
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Linnaeus C 1758. Systema Naturae. Editio decima. 1. Regnum Animale Holmiae, Laurentii Salvii. 824pp. |
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Winckworth, R I922. Note on the British species of Anomia. Proceedings of the Malacological Society of London. 15: 32-34. |
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Yonge C M 1977. Form and Evolution in the Anomiacea (Mollusca: Bivalvia)-- Pododesmus, Anomia, Patro, Enigmonia (Anomiidae): Placunanomia, Placuna (Placunidae Fam. Nov.). Philosophical Transactions of the Royal Society of London Series B. 276: 453-523. |
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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