Alvania beyrichii | |
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Shell of Alvania beyrichii (holotype) | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Mollusca |
Class: | Gastropoda |
Subclass: | Caenogastropoda |
Order: | Littorinimorpha |
Superfamily: | Rissooidea |
Family: | Rissoidae |
Genus: | Alvania |
Species: | †A. beyrichii
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Binomial name | |
†Alvania beyrichii (Bosquet, 1859)
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Synonyms | |
† Rissoa beyrichii Bosquet, 1859 (basionym; does not belong to Rissoa) |
Alvania beyrichii is an extinct species of minute sea snail, a marine gastropod mollusc or micromollusk in the family Rissoidae. [1]
The length of the shell attains 1.6 mm, its diameter 1.2 mm.
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adding to it. (February 2024) |
Fossils of this species were found in Lower Oligocene strata in Belgium.