Odostomia tenuisculpta

Odostomia tenuisculpta
Apertural view of a shell of Odostomia tenuisculpta
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Heterobranchia
Family:	Pyramidellidae
Genus:	Odostomia
Species:	O. tenuisculpta
Binomial name
Odostomia tenuisculpta Carpenter, 1864 [1]
Synonyms [2]
Evalea tenuisculpta (Carpenter, 1864) Odostomia amchitkana Dall and Bartsch, 1909 Odostomia baranoffensis Dall and Bartsch, 1909 Odostomia clesseni Dall and Bartsch, 1909 Odostomia jewetti Dall & Bartsch, 1907 Odostomia kadiahkensis Dall and Bartsch, 1909 Odostomia obesa Dall and Bartsch, 1909 Odostomia phanea Dall and Bartsch, 1907 Odostomia santarosana Dall and Bartsch, 1909 Odostomia socorroensis Dall and Bartsch, 1909 Odostomia straminea Carpenter, 1865 Odostomia (Evalea) tenuisculpta Carpenter, 1864 Odostomia (Evalea) tillamookensis Dall & Bartsch, 1907

Odostomia tenuisculpta is a species of sea snail, a marine gastropod mollusc in the family Pyramidellidae, the pyrams and their allies. ^{[3] [4]}

Description

The yellowish shell has an elongate-ovate shape with the early whorls spirally lirate and the later ones only obsoletely so. Its length measures 5.6 mm. The whorls of the protoconch are small, smooth, obliquely, almost completely, immersed in the first of the succeeding turns. The six whorls of the teleoconch are evenly well-rounded with appressed summits. The first three are marked between the sutures by many subequal lirae of which there are about fifteen on the second turn. On the last two turns these lirations become quite obsolete. The periphery and the base of the body whorl are inflated and well rounded. They are marked by very feeble spiral striations and lines of growth. The oval aperture is moderately large, somewhat effuse anteriorly. The posterior angle is acute. The outer lip is thin. The columella is strongly curved, reinforced partly by the attenuated base, moderately reflected anteriorly. It bears a strong fold at its insertion, which appears as if it were the inflected termination of the columella. ^[5]

Distribution

This species occurs in the Pacific Ocean from Washington (state) to California. The southern representatives were identified by G.W. Tryon as Odostomia straminea Carpenter.

References

1. Carpenter, 2d Rept. Brit. Assoc. Adv. Sci., 1864,. p.659
2. ITIS: Odostomia tenuisculpta
3. Rosenberg, G. (2011). Odostomia tenuisculpta Carpenter, 1864. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=581260 on 2011-11-29
4. 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.
5. A Monograph of West American Pyramidellid Mollusks, United States National Museum Bulletin 68,p. 206; 1909

External links

• World Register of Marine Species