Odostomia aleutica

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Odostomia aleutica
Odostomia aleutica 001.png
Apertural view of a shell of Odostomia aleutica
Scientific classification
Kingdom:
Animalia
Phylum:
Mollusca
Class:
Gastropoda
(unranked):
clade Heterobranchia
clade Euthyneura
clade Panpulmonata
Superfamily:
Pyramidelloidea
Family:
Pyramidellidae
Genus:
Odostomia
Species:
O. aleutica
Binomial name
Odostomia aleutica
Dall & Bartsch, 1909
Synonyms
  • Evalea aleutica Dall & Bartsch, 1909
  • Odostomia (Evalea) aleutica Dall & Bartsch, 1909 (basionym)

Odostomia aleutica is a species of sea snail, a marine gastropod mollusk in the family Pyramidellidae, the pyrams and their allies. [1] [2]

Contents

Description

The broadly conic shell is light green. Its length is 4.4 mm. The nuclear whorls are small and deeply obliquely immersed in the first of the succeeding turns. The six post-nuclear whorls somewhat inflatedly rounded, with well-rounded summits. The entire surface is marked by fine lines of growth and numerous very fine, closely spaced, wavy, spiral striations. The sutures are strongly impressed. The periphery of the body whorl and the base of the shell are well rounded, the latter quite strongly inflated. The aperture is broadly ovate, somewhat effuse anteriorly. The posterior angle is acute. The thin outer lip is broadly curved. The columella is slender, curved, and reflected, free from the base, forming a suggestion of an umbilicus;. Thecolumellar fold is slender, situated a little below the insertion of the columella. The parietal wall is covered by a thin callus. [3]

Distribution

This marine species is found in the Bering Sea off Alaska.

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References

  1. ↑ Rosenberg, G. (2011). Odostomia aleutica Dall & Bartsch, 1909. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=581090 on 2011-10-26
  2. ↑ 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.
  3. ↑ "A Monograph of West American Pyramidellid Mollusks" , William Healy Dall and Paul Bartsch , Smithsonian Institution, 1909]
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