Odostomia baranoffensis

Odostomia baranoffensis
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
(unranked):	clade Heterobranchia clade Euthyneura clade Panpulmonata
Superfamily:	Pyramidelloidea
Family:	Pyramidellidae
Genus:	Odostomia
Species:	O. baranoffensis
Binomial name
Odostomia baranoffensis Dall & Bartsch, 1909
Synonyms
Evalea baranoffensis Dall & Bartsch, 1909 Odostomia (Evalea) baranoffensis Dall

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

Description

The elongate-ovate, yellowish-white shell is rather stout. It measures 6.3 mm. The nuclear whorls are obliquely immersed in the first of the succeeding turns, the outer edge of the last turn only being visible. The six post-nuclear whorls are well rounded, with a narrow, tabulate shoulder at the summit. The suture is rendered subchanneled by the shoulder at the summit of the whorls. The periphery and the base of the body whorl is inflated, well rounded, the latter with a depressed pit, but no perforation in the umbilical area. The entire surface is marked by lines of growth and very fine spiral striations. The aperture is ear-shaped. The posterior angle is obtuse. The outer lip is thick within and thin at the edge. The columella is very stout, twisted and obliquely revolute, armed with a thick oblique fold opposite the umbilical chink;. The parietal wall is covered by a thin callus. ^[3]

Distribution

This species occurs in the Pacific Ocean off Alaska at Baranoff Island.

Habitat

This species is found in the following habitats:^[1]

• Brackish
• Marine

References

1. ^ ^{a b} WoRMS (2011). Odostomia baranoffensis Dall & Bartsch, 1909. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=576637 on 2011-10-26
2. ^ Kantor Yu.I. & Sysoev A.V. (2006) Marine and brackish water Gastropoda of Russia and adjacent countries: an illustrated catalogue. Moscow: KMK Scientific Press. 372 pp. + 140 pls.
3. ^ William Healy Dall and Paul Bartsch , "A Monograph of West American Pyramidellid Mollusks" , Smithsonian Institution, 1909

External links

External identifiers for Odostomia baranoffensis
WoRMS	576637

• To USNM Invertebrate Zoology Mollusca Collection
• To World Register of Marine Species