Odostomia unidentata

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Odostomia unidentata
Odostomia unidentata.png
Drawing of a shell of Odostomia unidentata
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
(unranked): clade Heterobranchia
clade Euthyneura
clade Panpulmonata
Superfamily: Pyramidelloidea
Family: Pyramidellidae
Genus: Odostomia
Species: O. unidentata
Binomial name
Odostomia unidentata
(Montagu, 1803)[1]
  • Odostomia albella (Loven)
  • Odostomia monterosati Bucq. Dautz. et Dollf.[2]
  • Odostomia unidentata var. albella (Lovén, 1846)

Odostomia unidentata is a species of sea snail, a marine gastropod mollusk in the family Pyramidellidae, the pyrams and their allies.[3][4][5]


The almost opaque, glossy, white shell is solid. The length measures 5 mm. The protoconch has a helicoid shape. The teleoconch contains six, flattened whorls with a narrow, distinct suture. The shell has a more or less distinct peripheral angle, visible also at the base of the upper whorls. The sculpture has slight, microscopical, close-set spiral striae and prosocline growthlines. The umbilicus is lacking, although there is sometimes a small chink. The aperture has a straight columellar border. The columellar tooth is long and prominent.[6][7]


This species has a wide distribution and occurs in the following locations:[3]


  1. ^ Montagu, Forbes and Hanley, t. 95, f. 7,
  2. ^ B. D. D. Moll. Mar. Roussilon, 167
  3. ^ a b c Gofas, S. (2011). Odostomia unidentata (Montagu, 1803). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=141025 on 2012-01-12
  4. ^ Hayward, P.J.; Ryland, J.S. (Ed.) (1990). The marine fauna of the British Isles and North-West Europe: 1. Introduction and protozoans to arthropods. Clarendon Press: Oxford, UK. ISBN 0-19-857356-1. 627 pp.
  5. ^ Gofas, S.; Le Renard, J.; Bouchet, P. (2001). Mollusca, in: Costello, M.J. et al. (Ed.) (2001). European register of marine species: a check-list of the marine species in Europe and a bibliography of guides to their identification. Collection Patrimoines Naturels, 50: pp. 180-213
  6. ^ G.W. Tryon, Manual of Conchology vol. VIII, p. 348; 1886
  7. ^ J.J. van Aartsen, E. Gittenberger & J. Goud, Pyramidellidae (Mollusca, Gastropoda, Heterobranchia) collected during the Dutch CANCAP and MAURITANIA expeditions in the south-eastern part of the North Atlantic Ocean (part 1); CANCAP-project . Contributions, no. 119; Zool . Verh. Leiden 321, 15.vi.1998:1-57, figs 1-68

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