Alvania ismar
 | This article relies on a single source. (March 2025) |
| Alvania ismar Temporal range: | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Caenogastropoda |
| Order: | Littorinimorpha |
| Family: | Rissoidae |
| Genus: | Alvania |
| Species: | †A. ismar |
| Binomial name | |
| †Alvania ismar | |
Alvania ismar is an extinct species of minute sea snail, a marine gastropod mollusk or micromollusk in the family Rissoidae.
Distribution
[edit]The species occurred at the Strait of Sicily in the Pleistocene at depths of 649 meters.[1]
Description
[edit]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 do not reach the base and the inner side of the outer lip is without denticles, protoconch is paucispiral.[1]
References
[edit]- 1 2 Amati, Bruno; Taviani, Marco; Oliverio, Marco (2024-03-27), Alvania ismar Amati & Taviani & Oliverio 2024, n. sp., doi:10.5281/zenodo.10912985
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