Alvania compacta

Alvania compacta
Shell of Alvania compacta
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Caenogastropoda
Order:	Littorinimorpha
Superfamily:	Rissooidea
Family:	Rissoidae
Genus:	Alvania
Species:	A. compacta
Binomial name
Alvania compacta (P. P. Carpenter, 1864)
Synonyms
Alvania acutelirata(P. P. Carpenter, 1864) Alvania filosaP. P. Carpenter, 1864 Alvania fossilisBartsch, 1911 Alvania iliuliukensisBartsch, 1911 Alvania pedroanaBartsch, 1911 Rissoa acutelirataP. P. Carpenter, 1864 (Basionym, taxon does not belong to Rissoa) Rissoa compactaP. P. Carpenter, 1864 superseded combination

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

Description

The length of the shell varies between 2 mm and 3 mm.

It is sculptured like Alvania beanii, but with short, broad whorls. ^[2]

(Described as Rissoia acutelirata) The thin shell has a brownish ash-color. Its sculpture shows about 18 longitudinal, distant ribs, vanishing on the periphery, crossed by distant spiral lirae (15 on the body whorl). The shell is not nodose. It contains six convex whorls, rapidly enlarging, with a well-impressed suture. ^[3]

Distribution

This species occurs off Alaska, USA to Northern Baja California, Mexico

References

1. MolluscaBase eds. (2024). MolluscaBase. Alvania compacta (P. P. Carpenter, 1864). Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=580527 on 2024-01-18
2. Carpenter, P. P. (1864). Supplementary report on the present state of our knowledge with regard to the Mollusca of the West Coast of North America. Reports of the British Association for the Advancement of Science. (1863) 33: 517-686
3. G.W. Tryon (1884), Manual of conchology, structural and systematic : with illustrations of the species; Academy of Natural Sciences ser. 1, vol. 9 This article incorporates text from this source, which is in the public domain .

• Turgeon, D., Quinn, J. F., Bogan, A. E., Coan, E. V., Hochberg, F. G., Lyons, W. G., Mikkelsen, P. M., Neves, R. J., Roper, C. F. E., Rosenberg, G., Roth, B., Scheltema, A., Thompson, F. G., Vecchione, M., Williams, J. D. (1998). Common and scientific names of aquatic invertebrates from the United States and Canada: mollusks. 2nd ed. American Fisheries Society Special Publication, 26. American Fisheries Society: Bethesda, MD (USA). ISBN 1-888569-01-8. IX, 526 + cd-rom pp.

External links

• Bartsch, P. (1911). The Recent and fossil mollusks of the genus Alvania from the west coast of America. Proceedings of the United States National Museum. 41(1863): 333-362