Alvania marchadi
| Alvania marchadi | |
|---|---|
| |
| Shell of Alvania marchadi (specimen at the Natural History Museum, Rotterdam) | |
Scientific classification 
| |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Caenogastropoda |
| Order: | Littorinimorpha |
| Superfamily: | Rissooidea |
| Family: | Rissoidae |
| Genus: | Alvania |
| Species: | A. marchadi
|
| Binomial name | |
| Alvania marchadi (Gofas, 1999)
| |
Alvania marchadi is a species of minute sea snail, a marine gastropod mollusk or micromollusk in the family Rissoidae.[1] It is named after Igor Marche-Marchad.[2]
Description
The length of the shell ranges between 2.25 mm and 2.95 mm and is thickened with a strong rim. The exterior of the shell contains rigid spirals, while the interior is smooth.[2]
The protoconch has 1-3.1.5 convex whorls and "7 spiral flat cords...formed by minute granules".[2]
The teleoconch has 3.3-4.2 convex wholes with "strong, widely spaced, nearly vertical axial folds." [2] The body whorl is rounded with eight spiral and axial folds that fade "towards the periumbilical area". [2]
Distribution
This marine species occurs in the Atlantic Ocean between the coast off Dakar, Senegal and the Sahara, at depths between 80 m and 250 m.[2]
References
- ^ Alvania marchadi (Gofas, 1999). Gofas, S. (2009). Alvania marchadi (Gofas, 1999). In: Bouchet, P.; Gofas, S.; Rosenberg, G. World Marine Mollusca database. Accessed through the World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=141212 on 9 August 2010 .
- ^ a b c d e f Gofas, Serge (March 29, 1999). "The West African Rissoidae (Gastropoda: Rissooidea) and their similarities to some European species". The Nautilus. 113 (1): 89–91. Bibcode:1999Nauti.113...78G. doi:10.5962/bhl.part.2018 – via Biodiversity Heritage Library.
External links
- Gofas S. (1999). The West African Rissoidae (Gastropoda: Rissooidea) and their similarities to some European species. The Nautilus 113(3): 78-101
- Gofas, S.; Le Renard, J.; Bouchet, P. (2001). Mollusca. in: Costello, M.J. et al. (eds), European Register of Marine Species: a check-list of the marine species in Europe and a bibliography of guides to their identification. Patrimoines Naturels. 50: 180-213
