Odostomia killisnooensis

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

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

Odostomia (Evalea) killisnooensis Dall & Bartsch, 1909 (basionym)

Description

The yellowish white shell is very elongate ovate, and umbilicated. It is thick and robust. Its length measures 6.4 mm. The whorls of the protoconch are very small, obliquely, almost completely immersed in the first of the succeeding turns. The six whorls of the teleoconch are evenly, moderately rounded, with very faintly shouldered summits. The spiral sculpture is strong, marked by numerous, fairly strong, equal and equally closely spaced, wavy, spiral striations ( = grooves), and fine retractive lines of growth. The periphery and the base of the body whorl are well rounded and marked like the spire. The sutures are well impressed. The aperture is ovate, somewhat effuse anteriorly. The posterior angle is acute. The outer lip is thin. The columella is very oblique The columellar fold is decidedly posterior to the middle of the columella.,posterior two-thirds straight, and strongly reflected, the anterior third strongly curved. The columellar fold is strong, oblique and situated at the insertion of the columella. The parietal wall is covered by a thin callus.[3][4]

Distribution

The type specimen was collected off Killisnoo, Alaska.

References
  1. Rosenberg, G. (2011). Odostomia killisnooensis Dall & Bartsch, 1909. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=581226 on 2011-11-10
  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. William Healy Dall and Paul Bartsch , "A Monograph of West American Pyramidellid Mollusks" , Smithsonian Institution, 1909
  4. A Monograph of West American Pyramidellid Mollusks, United States National Museum Bulletin 68, p. 195; 1909 Plate 22 # 7
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