Odostomia baranoffensis

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Odostomia baranoffensis
Odostomia baranoffensis.png
Apertural view of a shell of 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 [1]
  • Evalea baranoffensis Dall & Bartsch, 1909
  • Odostomia (Evalea) baranoffensis Dall & Bartsch, 1909

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

Contents

This species is considered a synonym of Odostomia tenuisculpta Carpenter, 1864 by ITIS. [4] Dall & Bartsch made the distinction based upon the following indications: [1]

Description

The elongate-ovate, yellowish-white shell is rather stout. Its length measures 6.3 mm. The whorls of the protoconch are obliquely immersed in the first of the succeeding turns, the outer edge of the last turn only being visible. The six whorls of the teleoconch 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. [1]

Distribution

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

Habitat

This species is found in the following habitats: [2]

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References

  1. 1 2 3 William Healy Dall and Paul Bartsch , "A Monograph of West American Pyramidellid Mollusks" , Smithsonian Institution, 1909
  2. 1 2 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
  3. ↑ 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.
  4. ↑ ITIS: Odostomia tenuisculpta
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