Alvania fenestrata is a species of minute sea snail, a marine gastropod mollusk or micromollusk in the family Rissoidae.[1]
| Alvania fenestrata | |
|---|---|
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| Shell of Alvania fenestrata (specimen at the Natural History Museum, Rotterdam) | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Caenogastropoda |
| Order: | Littorinimorpha |
| Superfamily: | Rissooidea |
| Family: | Rissoidae |
| Genus: | Alvania |
| Species: | A. fenestrata
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| Binomial name | |
| Alvania fenestrata (Krauss, 1848)
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| Synonyms | |
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Description
editThe length of the shell attains 4 mm, its diameter 2 mm.
The smooth protoconch consists of three whorls, forming a conical apex. There are three postnatal whorls. The sculpture consists of 16-18 axial riblets that continue across the base. There are two spiral lirae on Ist and 2nd whorls, 3 on 3rd. The intersections are nodulose. The base of the shell contains three spiral lirae. [2]
Distribution
editThis species occurs off the coast of KwaZulu-Natal, South Africa.
Fossils were found in Pleistocene strata in the Little Brak River, South Africa.
References
edit- ^ MolluscaBase eds. (2023). MolluscaBase. Alvania fenestrata (Krauss, 1848). Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=594838 on 2023-12-26
- ^ * Bartsch, P. (1915). Report on the Turton Collection of South African marine mollusks, with additional notes on other South African shells contained in the United States National Museum. Bulletin. United States National Museum. 91: xii + 305 pp., 54 plates.
- Kilburn, R.N. & Rippey, E. (1982) Sea Shells of Southern Africa. Macmillan South Africa, Johannesburg, xi + 249 pp.
External links
edit- Krauss, F. (1848) Die Südafrikanischen Mollusken. Ein Beitrag zur Kenntniss der Mollusken des Kap- und Natallandes und zur Geographischen Verbreitung derselben mit Beschreibung und Abbildung der neuen Arten. Ebner and Seubert, Stuttgart, 140 pp., 6 pls
- Barnard, K. H. (1963). Contributions to the knowledge of South African marine Mollusca. Part III. Gastropoda: Prosobranchiata: Taenioglossa. Annals of the South African Museum 47(1): 1-199
- Barnard, K.H. 1974. Contributions to the knowledge of South African Marine Mollusca. Part VII. Revised fauna list. Annals of the South African Museum, 47(5): 663-781
- Malacopics Photogallery: image