Alvania urgonensis is an extinct species of minute sea snail, a marine gastropod mollusc or micromollusk in the family Rissoidae.[1]
| Alvania urgonensis | |
|---|---|
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| Shell of Alvania urgonensis (holotype) | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Caenogastropoda |
| Order: | Littorinimorpha |
| Superfamily: | Rissooidea |
| Family: | Rissoidae |
| Genus: | Alvania |
| Species: | †A. urgonensis
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| Binomial name | |
| †Alvania urgonensis Cossmann, 1918
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Description edit
The length of the shell attains 3.5 mm, its diameter 1.25 mm.
This section needs expansion. You can help by adding to it. (February 2024) |
Distribution edit
Fossils of this species were in Barremian strata (Cretaceous) near Orgon, southern France.
References edit
- ^ 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
External links edit
- Cossmann, M. (1918). Les coquilles des calcaires d'Orgon (B.-du-R.). Bulletin de la Société Géologique de France, quatrième série.
- Cossmann, M. (1921). Essais de paléoconchologie comparée. Douzième livraison. Paris: [the author]. 349 pp., plates A-D, 1-6
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