Alvania canonica

Alvania canonica
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Caenogastropoda
Order:	Littorinimorpha
Superfamily:	Rissooidea
Family:	Rissoidae
Genus:	Alvania
Species:	A. canonica
Binomial name
	Alvania canonica; (Dall, 1927)
Synonyms
	Rissoa (Cingula) canonica Dall, 1927 (basionym); Rissoa canonica Dall, 1927 (Alvania accepted as genus);

Alvania canonica is a species of minute sea snail, a marine gastropod mollusk or micromollusk in the family Rissoidae.^[1]

Description

The length of the shell attains 2.5 mm, its diameter 1.4 mm.

(Original description) The small, white shell is smooth and opaque. It has four well-rounded whorls, including a smooth, not differentiated, protoconch and separated by a well-marked but not deep suture. The sculpture only consists of more or less feeble incremental lines. The base of the shell is evenly rounded and imperforate. The aperture is subovate, not oblique. The margin is simple, slightly thickened, not complete in the young but in the adult united by enamel over the body ^[2]

Distribution

This marine species occurs in the Atlantic Ocean off Georgia, USA.

References

^ MolluscaBase eds. (2024). MolluscaBase. Alvania canonica (Dall, 1927). Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=532369 on 2024-01-18
^ Dall, W. H. (1927). Small shells from dredgings off the southeast coast of the United states by the United States Fisheries Steamer "Albatross", in 1885 and 1886. Proceedings of the United States National Museum. 70(2667): 1-134 This article incorporates text from this source, which is in the public domain.

External links

[WoRMS-1] MolluscaBase eds. (2024). MolluscaBase. Alvania canonica (Dall, 1927). Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=532369 on 2024-01-18

[2] Dall, W. H. (1927). Small shells from dredgings off the southeast coast of the United states by the United States Fisheries Steamer "Albatross", in 1885 and 1886. Proceedings of the United States National Museum. 70(2667): 1-134 This article incorporates text from this source, which is in the public domain.

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