Odostomia dinella

Odostomia dinella
Apertural view of a shell of Odostomia dinella
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Family:	Pyramidellidae
Genus:	Odostomia
Species:	O. dinella
Binomial name
Odostomia dinella Dall & Bartsch, 1909
Synonyms[1]
Odostomia cornadoensis Dall and Bartsch, 1909 Odostomia farella Dall and Bartsch, 1909 Odostomia orcutti Bartsch, 1917

Odostomia dinella is a species of sea snail, a marine gastropod mollusc in the family Pyramidellidae, the pyrams and their allies.[2][3]

Description

The small shell is ovate, vitreous and semitransparent. Its length measures 2.2 mm. The five whorls of the teleoconch form a spire with almost straight sides, slightly rounded, feebly contracted at the suture, appressed at the summit. They are marked only by lines of growth. The sutures are well impressed. The periphery of the body whorl is obscurely angulated. The base of the shell is somewhat inflated, well rounded, narrowly umbilicated and marked like the spire. The aperture is ovate. The posterior angle is acute. The outer lip is thin. The columella is slender, almost vertical, slightly revolute, provided with a weak fold at its insertion. The parietal wall is covered with a strong callus.[4]

Distribution

This species occurs in the Pacific Ocean off California.

References

1. ITIS: Odostomia dinella
2. Rosenberg, G. (2011). Odostomia dinella Dall & Bartsch, 1909. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=581129 on 2011-10-26
3. 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.
4. William Healy Dall and Paul Bartsch , "A Monograph of West American Pyramidellid Mollusks" , Smithsonian Institution, 1909

External links

• World Register of Marine Species