Edge Rewrite
// HTMLRewriter · presentation

This page was redesigned at the edge.

Cloudflare fetched the original article and streamed it through HTMLRewriter to apply an entirely new visual system without rebuilding the source page.

// request.cf · coarse context

A page that knows where it met you.

Only coarse request metadata is shown. This demo does not display or persist visitor IP addresses.

Country
US
Cloudflare location
CMH
Connection
HTTP/2
Language
Not provided

Ray ID: a247f036ec6199fe

Jump to content

// Workers AI · dad joke modeWhat did Alvania compacta say? I'm shell-shocked.

From Wikipedia, the free encyclopedia

Alvania compacta
Shell of Alvania compacta
Scientific classification Edit this classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Caenogastropoda
Order: Littorinimorpha
Superfamily: Rissooidea
Family: Rissoidae
Genus: Alvania
Species:
A. compacta
Binomial name
Alvania compacta
Synonyms
  • Alvania acutelirata (P. P. Carpenter, 1864)
  • Alvania filosa P. P. Carpenter, 1864
  • Alvania fossilis Bartsch, 1911
  • Alvania iliuliukensis Bartsch, 1911
  • Alvania pedroana Bartsch, 1911
  • Rissoa acutelirata P. P. Carpenter, 1864 (Basionym, taxon does not belong to Rissoa)
  • Rissoa compacta P. P. Carpenter, 1864 superseded combination

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

Description

[edit]

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

[edit]

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

References

[edit]
  • 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.
[edit]