Alvania ismar is an extinct species of minute sea snail, a marine gastropod mollusk or micromollusk in the family Rissoidae.

Distribution

The species occured at the Strait of Sicily in Pleistocene at depths of 649 meters.[1]

Description

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]

References

  1. ^ a b Amati, Bruno; Taviani, Marco; Oliverio, Marco (2024-03-27), Alvania ismar Amati & Taviani & Oliverio 2024, n. sp., doi:10.5281/zenodo.10912985{{citation}}: CS1 maint: url-status (link)
Allikas: https://en.wikipedia.org/wiki/Alvania_ismar
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