| Alvania dumasi | |
|---|---|
 | |
| Shell of Alvania dumasi (holotype) | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Caenogastropoda |
| Order: | Littorinimorpha |
| Superfamily: | Rissooidea |
| Family: | Rissoidae |
| Genus: | Alvania |
| Species: | †A. dumasi |
| Binomial name | |
| †Alvania dumasi (Cossmann, 1899) | |
| Synonyms | |
† Rissoia dumasiCossmann, 1899 | |
Alvania dumasi is an extinct species of minute sea snail, a marine gastropod mollusk or micromollusk in the family Rissoidae. [1]
The length of the shell attains 3¼ mm, its diameter 2 mm.
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Fossils were found in Eocene strata in the Lower Loire basin, France.
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