Alvania fenestrata
From Wikipedia, the free encyclopedia
| Alvania fenestrata | |
|---|---|
 | |
| Shell of Alvania fenestrata (specimen at the Natural History Museum, Rotterdam) | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Caenogastropoda |
| Order: | Littorinimorpha |
| Superfamily: | Rissooidea |
| Family: | Rissoidae |
| Genus: | Alvania |
| Species: | A. fenestrata |
| Binomial name | |
| Alvania fenestrata (Krauss, 1848) | |
| Synonyms | |
| |
Alvania fenestrata is a species of small sea snail, a marine gastropod mollusk or micromollusk in the family Rissoidae.[1]
The 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]