Alvania minuscula is a species of minute sea snail, a marine gastropod mollusc or micromollusc in the family Rissoidae.[1]
| Alvania minuscula | |
|---|---|
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| Shell of Alvania minuscula (holotype) | |
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Caenogastropoda |
| Order: | Littorinimorpha |
| Superfamily: | Rissooidea |
| Family: | Rissoidae |
| Genus: | Alvania |
| Species: | A. minuscula
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| Binomial name | |
| Alvania minuscula (A. E. Verrill & K. J. Bush, 1900)
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| Synonyms | |
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Rissoa (Manzonia) minuscula A. E. Verrill & K. J. Bush, 1900 superseded combination | |
Description
editThe length of the shell attains 2.1 mm, its diameter 1.2 mm.
(Original description) The very minute shell is ovate and pale yellowish brown. It consists of five whorls besides the small, mammillary, apical whorl. The whorls are convex in the middle. Those of the spire are crossed by three revolving cingula and covered by numerous, fine, elevated, longitudinal ribs, most distinct in the grooves between the cingula and on the subsutural area, giving the surface a finely cancellated appearance under the microscope. These ribs do not interrupt the stronger revolving lines. The body whorl is relatively large and has three or four smaller, additional revolving cingula below the periphery, the last of which circumscribes the narrow and shallow umbilical chink. The aperture is round-ovate with a strongly thickened margin, supported by a well-developed marginal rib. [2]
Distribution
editThis species occurs in the Atlantic Ocean on the Atlantis Seamount.
References
edit- ^ MolluscaBase eds. (2024). MolluscaBase. Alvania minuscula (A. E. Verrill & K. J. Bush, 1900). Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=894261 on 2024-01-25
- ^ Verrill A.E. and Bush K.J. (1900). Additions to the marine Mollusca of the Bermudas. Transactions of the Connecticut Academy of Arts and Sciences 10: 513-544
This article incorporates text from this source, which is in the public domain.
- Jensen, R. H. (1997). A Checklist and Bibliography of the Marine Molluscs of Bermuda. Unp. , 547 pp