Alvania marchadi

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Alvania marchadi
Alvania marchadi 001.jpg
Shell of Alvania marchadi (specimen at the Natural History Museum, Rotterdam)
Scientific classification OOjs UI icon edit-ltr.svg
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]

Contents

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

  1. ↑ 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 .
  2. 1 2 3 4 5 6 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.


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