Alvania chilensis is an extinct species of minute sea snail, a marine gastropod mollusc or micromollusk in the family Rissoidae.[1]
| Alvania chilensis | |
|---|---|
| |
| Shell of Alvania chilensis (holotype) | |
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Caenogastropoda |
| Order: | Littorinimorpha |
| Superfamily: | Rissooidea |
| Family: | Rissoidae |
| Genus: | Alvania |
| Species: | †A. chilensis
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| Binomial name | |
| †Alvania chilensis (R. A. Philippi, 1887)
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| Synonyms | |
|
† Rissoa chilensis R. A. Philippi, 1887 · | |
Description
editThe length of the shell attains 1¾ mm.
The minute shell has a globose-conical shape and is imperforate. The shell contains 5½ whorls. The sculpture consists of many longitudinal ribs. The aperture is ovate-orbicular. The inner lip is incrassate.
Distribution
editFossils of this species were found in Tertiary strata in Chile.
References
edit- ^ MolluscaBase eds. (2024). MolluscaBase. Alvania chilensis (R. A. Philippi, 1887) †. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=880916 on 2024-02-10
External links
edit- Philippi, R. A. (1887). Die Tertiären und Quartären Versteinerungen Chiles / Los fósiles Terciarios i Cuatarios de Chile. iv + 266 pp. Lepizig: Brockhaus
This article incorporates text from this source, which is in the public domain.
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