Odostomia barkleyensis

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

Odostomia barkleyensis
Apertural view of Odostomia barkleyensis
Scientific classification
Kingdom:
Animalia
Phylum:
Mollusca
Class:
Gastropoda
(unranked):
clade Heterobranchia
clade Euthyneura
clade Panpulmonata
Superfamily:
Pyramidelloidea
Family:
Pyramidellidae
Genus:
Odostomia
Species:
O. barkleyensis
Binomial name
Odostomia barkleyensis
Dall & Bartsch, 1910
Synonyms
  • Evalea barkleyensis Dall & Bartsch, 1910
  • Odostomia (Evalea) barkleyensis Dall & Bartsch, 1910

Description

The shell is small, measuring 3.1 mm. It is regularly conic, bluish-white. The nuclear whorls are deeply and obliquely immersed in the first of the succeeding turns, above which only the tilted edge of the last volution projects. The 5½ post-nuclear whorls are slightly rounded. They are marked by fine retractive lines of growth and numerous fine, spiral striations. The sutures are strongly impressed. The periphery of the body whorl is subangulated. The base of the shell is rather short, sloping from the subangulated periphery to its anterior margin, with a tumid area bounding the narrow umbihcus, marked like the spire. The aperture is oval. The posterior angle is acute. The outer lip is thin. The inner lip is decidedly curved and reflected. The columella is provided with a strong oblique fold at its insertion. The parietal wall is glazed with a moderately thick callus.[3]

Distribution

This species occurs in the Pacific Ocean off British Columbia, Canada.

References
  1. Rosenberg, G. (2011). Odostomia barkleyensis Dall & Bartsch, 1910. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=581107 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. Paul Bartsch, Proceedings of the U.S. National Museum :42; 1912
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