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Alvania punctura

From Wikipedia, the free encyclopedia

Alvania punctura
Shell of Alvania punctura (specimen at the Natural History Museum, Rotterdam)
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Caenogastropoda
Order: Littorinimorpha
Superfamily: Rissooidea
Family: Rissoidae
Genus: Alvania
Species:
A. punctura
Binomial name
Alvania punctura
(Montagu, 1803)[1]
Synonyms[2]
  • Alvania puncturata Locard, 1886 (unjustified emendation)
  • Arsenia punctura (Montagu, 1803) superseded combination
  • Alvania (Arsenia) punctura Montagu, 1803
  • Rissoa punctura (Montagu, 1803)
  • Rissoa punctura var. diversa Jeffreys, 1867 ·
  • Turbo punctura Montagu, 1803
  • Turritella dorvilleana Leach, 1852 junior subjective synonym

Alvania punctura is a species of minute sea snail, a marine gastropod mollusk or micromollusk in the family Rissoidae.[2]

Description

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The length of the shell attains 3 mm.

(Original description) The very glossy shell has rounded whorls, rather taper in shape, and finely reticulated. The colour of the shell is transparent yellowish-white. The aperture is sub-orbicular and has a thin lip. The ridges on the body whorl do not extend over the outer lip. The shell has a small umbilical chink. The length of the shell is the tenth of an inch. Its breadth one third its length. [3]

Distribution

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This species occurs in the Eastern Atlantic, from Norway to the Strait of Gibraltar; intertidal to ca. 100 m depth; rare and rather local in the Western Mediterranean (Corsica, Greece) in 50-200 m. Gorringe Ridge and Ampère Seamount, rare in 265-320 m. It is absent from Baltic Sea and the eastern basin of the English Channel. [2]

Fossils have been found in Pleistocene strata on Sicily, Italy.

References

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