Odostomia lucasana

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Odostomia lucasana
Odostomia lucasana 001.png
Apertural view of a shell of Odostomia lucasana
Scientific classification Red Pencil Icon.png
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Heterobranchia
Family: Pyramidellidae
Genus: Odostomia
Species:
O. lucasana
Binomial name
Odostomia lucasana
Dall & Bartsch, 1909
Synonyms
  • Evalea lucasana Dall & Bartsch, 1909
  • Odostomia (Evalea) lucasana Dall & Bartsch, 1909 (basionym)

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

Contents

Description

The light yellow shell has a broadly oval shape. Its length measures 4.7 mm. The whorls of the protoconch are deeply obliquely immersed in the first of the succeeding turns. The five whorls of the teleoconch are inflated, weakly contracted at the sutures, appressed at the summits. The first whorl is marked by several slender strongly incised spiral lines, the remaining with numerous very fine closely crowded, wavy, spiral striations. The sutures are well impressed. The periphery and the base of the body whorl are well inflated. They are marked like the space between the sutures. The aperture is very large and very broadly ovate. The posterior angle is acute. The outer lip is thin. The columella is stout, strongly curved, reflected, reinforced by the base and provided with a strong fold at its insertion. [3]

Distribution

This species occurs in the Pacific Ocean off Baja California peninsula.

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References

  1. ↑ WoRMS (2011). Odostomia lucasana Dall & Bartsch, 1909. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=575867 on 2011-11-10
  2. ↑ Keen M. (1971). Sea shells of Tropical West America. Marine mollusks from Baja California to Perú. (2nd edit.). Stanford University Press pp. 1064:
  3. ↑ Dall & Bartsch, A Monograph of West American Pyramidellid Mollusks, United States National Museum Bulletin 68, p. 204; 1909 Plate 26 # 1
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