 | This article relies largely or entirely on a single source .(March 2025) |
| Alvania ismar Temporal range: | |
|---|---|
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Caenogastropoda |
| Order: | Littorinimorpha |
| Family: | Rissoidae |
| Genus: | Alvania |
| Species: | †A. ismar |
| Binomial name | |
| †Alvania ismar Amati, Taviani & Oliverio, 2024 | |
Alvania ismar is an extinct species of minute sea snail, a marine gastropod mollusk or micromollusk in the family Rissoidae.
The species occured at the Strait of Sicily in Pleistocene at depths of 649 meters. [1]
The species had a height of 2.87 mm and a width of 1.7 mm. The species had a medium sized, ovate-conical shell, with a spiral sculpture on the whole teleoconch. strong axial ribs doesn't reach the base and the inner side of the outer lip is without denticles. protoconch is paucispiral. [1]
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