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 minute 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]
This species occurs off the coast of KwaZulu-Natal, South Africa.
Fossils were found in Pleistocene strata in the Little Brak River, South Africa.
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 minute 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]
This species occurs off the coast of KwaZulu-Natal, South Africa.
Fossils were found in Pleistocene strata in the Little Brak River, South Africa.