Odostomia clathratula
Odostomia clathratula | |
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Apertural view of the shell of Odostomia clathratula | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Mollusca |
Class: | Gastropoda |
Subclass: | Heterobranchia |
Family: | Pyramidellidae |
Genus: | Odostomia |
Species: | O. clathratula
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Binomial name | |
Odostomia clathratula (C.B. Adams, 1852) [1]
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Synonyms | |
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Odostomia clathratula is a
Description
The elongate-conic, slender shell is vitreous. It measures 2.5 mm. The two and one-half nuclear whorls form a depressed helicoid spire, whose axis is almost at right angles to that of the succeeding turns, in the first of which it is about one-half immersed. The seven post-nuclear whorls are very slightly rounded, strongly constricted at the sutures and prominently shouldered at the summit. They are marked by well rounded, tuberculate, axial ribs, of which 14 occur upon the first and second, 16 upon the third, 18 upon the fourth and fifth, and 24 upon the penultimate turn. In addition to the axial ribs, the whorls are marked between the sutures by four spiral cords which equal the ribs in strength, and render them tuberculate at their junction. The sutures are broadly and deeply channeled. The periphery and the somewhat prolonged base of the
Distribution
The species occurs in the Pacific Ocean off the
References
- ^ C. B. Adams, Ann. Lye. Nat. Hist. N. Y., vol. 5, 1852, pp. 389, 390.
- ^ WoRMS (2011). Odostomia clathratula (C.B. Adams, 1852). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=575827 on 2011-10-26
- ^ Keen M. (1971). Sea shells of Tropical West America. Marine mollusks from Baja California to Perú. (2nd edit.). Stanford University Press pp. 1064:
- ^ William Healy Dall and Paul Bartsch , "A Monograph of West American Pyramidellid Mollusks" , Smithsonian Institution, 1909