Alvania urgonensis
| Alvania urgonensis | |
|---|---|
| |
| Shell of Alvania urgonensis (holotype) | |
Scientific classification 
| |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Caenogastropoda |
| Order: | Littorinimorpha |
| Superfamily: | Rissooidea |
| Family: | Rissoidae |
| Genus: | Alvania |
| Species: | †A. urgonensis
|
| Binomial name | |
| †Alvania urgonensis Cossmann, 1918
| |
Alvania urgonensis is an extinct species of minute sea snail, a marine gastropod mollusc or micromollusk in the family Rissoidae.[1]
Description
The length of the shell attains 3.5 mm, its diameter 1.25 mm.
Distribution
Fossils of this species have been found in the Barremian strata (Cretaceous) near Orgon, southern France.
References
- ^ MolluscaBase eds. (2024). MolluscaBase. Alvania urgonensis Cossmann, 1918 †. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=866085 on 2024-02-18