Odostomia amilda

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Odostomia amilda
Odostomia amilda 001.png
Apertural view of a shell of Odostomia amilda
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Heterobranchia
Family: Pyramidellidae
Genus: Odostomia
Species:
O. amilda
Binomial name
Odostomia amilda
William Healey Dall & Paul Bartsch, 1909
Synonyms
  • Menestho amilda Dall & Bartsch, 1909
  • Odostomia (Menestho) amilda Dall & Bartsch, 1909 (basionym)

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

Contents

Description

The ovate shell is transparent. Its length measures 2.6 mm. The whorls of the protoconch are deeply immersed in the first of the succeeding turns, above which only the tilted edge of the last whorl projects. The four whorls of the teleoconch are well rounded, slightly contracted at the sutures, and somewhat shouldered at the summits, the first marked by four slender equal and subequally spaced incised spiral lines: the first are marked by a strongly incised groove a little below the summit which causes this to appear bounded by a well-rounded cord; The periphery of the body whorl is well rounded, the base somewhat inflated, well rounded, slightly attenuated anteriorly, marked by numerous exceedingly small microscopic spiral striations and three well incised equally spaced lines on the anterior half. The aperture is oval, somewhat effuse anteriorly. The posterior angle is obtuse. The outer lip is thin, showing the external sculpture within. The columella is slender, decidedly curved, somewhat reflected, reinforced by the base. The columella is provided with a strong fold at its insertion. [3]

Distribution

This species occurs in the Pacific Ocean off California.

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References

  1. ↑ Rosenberg, G. (2011). Odostomia amilda Dall & Bartsch, 1909. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=581096 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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