Alvania dumasi is an extinct species of minute sea snail, a marine gastropod mollusk or micromollusk in the family Rissoidae.MolluscaBase eds. (2024). MolluscaBase. Alvania dumasi (Cossmann, 1899) †. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=880754 on 2024-02-11
Description
The length of the shell attains 3.25 mm, its diameter 2 mm. Distribution Fossils were found in Eocene strata in the Lower Loire basin, France.
References
External links Cossmann, M. (1899). Mollusques éocèniques de la Loire-inférieure. Tome 2e. Premier fascicule. Bulletin de la Société des Sciences naturelles de l'Ouest de la France. 9(4): 307-360, pl. 23-26 Cossmann, M. (1919). Supplément aux mollusques éocéniques de la Loire-Inférieure. I. — Gastropodes et scaphopodes. Bulletin de la Société des Sciences Naturelles de l'Ouest de la France. série 3, 5: 53-141, pls 1-4.