Alvania chilensis

Alvania chilensis
Shell of Alvania chilensis (holotype)
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Caenogastropoda
Order:	Littorinimorpha
Superfamily:	Rissooidea
Family:	Rissoidae
Genus:	Alvania
Species:	†A. chilensis
Binomial name
†Alvania chilensis (R. A. Philippi, 1887)
Synonyms
† Rissoa chilensisR. A. Philippi, 1887 ·

Alvania chilensis is an extinct species of minute sea snail, a marine gastropod mollusc or micromollusk in the family Rissoidae. ^[1]

Description

The 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

Fossils of this species were found in Tertiary strata in Chile.

References

1. 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

• Philippi, R. A. (1887). Die Tertiären und Quartären Versteinerungen Chiles / Los fósiles Terciarios i Cuatarios de Chile. iv + 266 pp. Leipzig: Brockhaus This article incorporates text from this source, which is in the public domain .