| Alvania urgonensis | |
|---|---|
 | |
| Shell of Alvania urgonensis (holotype) | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Caenogastropoda |
| Order: | Littorinimorpha |
| Superfamily: | Rissooidea |
| Family: | Rissoidae |
| Genus: | Alvania |
| Species: | †A. urgonensis |
| Binomial name | |
| †Alvania urgonensis Cossmann, 1918 | |
Alvania urgonensis 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 3.5 mm, its diameter 1.25 mm.
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Fossils of this species were in Barremian strata (Cretaceous) near Orgon, southern France.
Alvania is a genus of minute sea snails, marine gastropod mollusks or micromollusks in the family Rissoidae.
Zebinella degrangei is an extinct species of minute sea snail, a marine gastropod mollusk or micromollusk in the family Rissoinidae.
Zebinella recticostulata is an extinct species of minute sea snail, a marine gastropod mollusk or micromollusk in the family Rissoinidae.
Alvania allixi is an extinct species of minute sea snail, a marine gastropod mollusc or micromollusk in the family Rissoidae.
Alvania bonneti is an extinct species of minute sea snail, a marine gastropod mollusc or micromollusk in the family Rissoidae.
Alvania dollfusi is an extinct species of minute sea snail, a marine gastropod mollusc or micromollusk in the family Rissoidae.
Alvania gourbesvillensis is an extinct species of minute sea snail, a marine gastropod mollusc or micromollusk in the family Rissoidae.
Alvania houdasi is an extinct species of minute sea snail, a marine gastropod mollusc or micromollusk in the family Rissoidae.
Alvania littorinoides is an extinct species of minute sea snail, a marine gastropod mollusc or micromollusk in the family Rissoidae.
Alvania peyreirensis is an extinct species of minute sea snail, a marine gastropod mollusc or micromollusk in the family Rissoidae.
Alvania sacyi is an extinct species of minute sea snail, a marine gastropod mollusc or micromollusk in the family Rissoidae.
Alvania argillensis is an extinct species of minute sea snail, a marine gastropod mollusc or micromollusk in the family Rissoidae.
Alvania foraminata is an extinct species of minute sea snail, a marine gastropod mollusc or micromollusk in the family Rissoidae.
Alvania aquensis is an extinct species of minute sea snail, a marine gastropod mollusc or micromollusk in the family Rissoidae.
Alvania barreti is an extinct species of minute sea snail, a marine gastropod mollusc or micromollusk in the family Rissoidae.
Alvania dumasi is an extinct species of minute sea snail, a marine gastropod mollusk or micromollusk in the family Rissoidae.
Alvania eurydictium is an extinct species of minute sea snail, a marine gastropod mollusc or micromollusk in the family Rissoidae.
Alvania frigida is an extinct species of minute sea snail, a marine gastropod mollusk or micromollusk in the family Rissoidae.
Alvania transiens is an extinct species of minute sea snail, a marine gastropod mollusc or micromollusk in the family Rissoidae.
Alvania raulini is an extinct species of minute sea snail, a marine gastropod mollusk or micromollusk in the family Rissoidae.
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