Alvania testae | |
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Shell of Alvania testae (specimen at MNHN, Paris) | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Mollusca |
Class: | Gastropoda |
Subclass: | Caenogastropoda |
Order: | Littorinimorpha |
Family: | Rissoidae |
Genus: | Alvania |
Species: | A. testae
|
Binomial name | |
Alvania testae (Aradas & Maggiore, 1844)
| |
Synonyms [1] | |
|
Alvania testae is a species of minute sea snail, a marine gastropod mollusc or micromollusk in the family Rissoidae. [1]
The length of the shell varies between 2 mm and 4 mm.
The whitish shell is somewhat solid and transparent. It showsh distant thin pliae, vanishing towards the base, subcancellated by less elevated, distant, spiral lirae. The shell contains six whorls, somewhat convex, with a deep suture. The aperture is effuse below. The outer lip is acute, smooth within and externally varicose. [2]
This species occurs in the Atlantic Ocean from Norway to West Africa; in the Mediterranean Sea (Corsica, Italy, Greece).
Fossils have been found in Pleistocene strata near Ficarazzi, Sicily.
Alvania testae | |
---|---|
Shell of Alvania testae (specimen at MNHN, Paris) | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Mollusca |
Class: | Gastropoda |
Subclass: | Caenogastropoda |
Order: | Littorinimorpha |
Family: | Rissoidae |
Genus: | Alvania |
Species: | A. testae
|
Binomial name | |
Alvania testae (Aradas & Maggiore, 1844)
| |
Synonyms [1] | |
|
Alvania testae is a species of minute sea snail, a marine gastropod mollusc or micromollusk in the family Rissoidae. [1]
The length of the shell varies between 2 mm and 4 mm.
The whitish shell is somewhat solid and transparent. It showsh distant thin pliae, vanishing towards the base, subcancellated by less elevated, distant, spiral lirae. The shell contains six whorls, somewhat convex, with a deep suture. The aperture is effuse below. The outer lip is acute, smooth within and externally varicose. [2]
This species occurs in the Atlantic Ocean from Norway to West Africa; in the Mediterranean Sea (Corsica, Italy, Greece).
Fossils have been found in Pleistocene strata near Ficarazzi, Sicily.