Turbonilla asperula

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Turbonilla asperula
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Heterobranchia
Family: Pyramidellidae
Genus: Turbonilla
Species:
T. asperula
Binomial name
Turbonilla asperula
Bush, 1899 [1]
Synonyms
  • Pyrgiscus asperula (Bush, 1899)
  • Pyrgostelis asperula (Bush, 1899)

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

Contents

Description

The shell grows to a length of 3 mm. The small, slender shell has a golden brown color with slight lustre. The prominent oblique protoconch consists of but little over one whorl. The teleoconch consists of six moderately convex, somewhat shouldered whorls. The 26 transverse ribs are slender, prominent, oblique (inclined to the right) and with a decided angle at the shoulder of the whorls. They extend over the periphery of the body whorl and decrease gradually in size on the base. The wide and deep interspaces are crossed on the body whorl by five (sometimes six) about equal and evenly spaced, raised, rounded, spiral lines, the first of which is just at or a little below the shoulder, and the last just at the periphery. They appear to render the sides of the ribs very irregular and the alternating spaces are crossed by scarcely discernible striae. The base of the shell is elongated, ornamented between the ribs by four more prominent, widely separated, raised, spiral lines, below which there are ill-defined fine ones. The aperture is ovate. The peritreme is continuous. [3]

Distribution

This species occurs in the Atlantic Ocean off the Bermudas.

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References

  1. ↑ Bush, K. J. 1899. Descriptions of new species of Turbonilla of the Western Atlantic fauna, with notes on those previously known. Proceedings of the Academy of Natural Sciences of Philadelphia 51: 145-177, pl. 8.
  2. ↑ Rosenberg, G. (2011). Turbonilla asperula Bush, 1899. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=533542 on 2012-03-01
  3. ↑ K.J. Bush (1899), Descriptions of New Species of Turbonilla of the Western Atlantic Fauna, with Notes on Those Previously Known; Proceedings of the Academy of Natural Sciences of Philadelphia, Vol. 51, No. 1 (January – March 1899), p. 152
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