Clanculus tonnerrei

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Clanculus tonnerrei
Clanculus tonnerrei 001.jpg
Drawing of a shell of Clanculus tonnerrei
Scientific classification Red Pencil Icon.png
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Vetigastropoda
Order: Trochida
Superfamily: Trochoidea
Family: Trochidae
Genus: Clanculus
Species:
C. tonnerrei
Binomial name
Clanculus tonnerrei
(G. Nevill & H. Nevill, 1874) [1]
Synonyms [2]
  • Clanculus (Clanculopsis) tonnerrei (G. Nevill & H. Nevill, 1874)
  • Clanculus assabensis Caramagna, 1888
  • Clanculus gennesi(H. Fisher & Vignal, 1901)
  • Clanculus gibbonsiG.B. Sowerby III, 1912
  • Euchelus bicinctusauct. non Philippi, 1849
  • Euchelus erythraeensisSturany, 1903
  • Trochus satrapiusvon Martens
  • Trochus tonnerreiG. Nevill & H. Nevill, 1874 (original description)

Clanculus tonnerrei is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails. [2]

Contents

Many specimens of Clanculus tonnerrei(G & H Nevill 1874) have been misidentified as belonging to Euchelus bicinctus, following a misidentification of Issel (1869) (Herbert, 1996). [2]

Description

The height of the shell attains 14 mm, its diameter ​14 1⁄2 mm. The umbilicate shell has a conoidal shape. It is granulate-cingulate with the cinguli unequally elevated. The smaller ones are interpolated, numbering 5 to 6 between suture and the periphery, 7 to 8 on the base of the body whorl obtusely angulated. The granules are rosy-red colored with white subalternating. The suture is moderate. The very oblique aperture is subquadrangular. Its fauces is sulcate, corresponding to the ridges of the exterior. The outer margin is obtuse and subcrenulated. The basal margin is plicatulate. The columella is disjoined and prominently denticulate above, oblique, with 1 or 2 tubercles where it joins the basal margin. The white umbilicus is narrow. Its margin is not crenate, with an elevated fold within the periphery. [3]

(Description of Euchelus bicinctus auct. non Philippi, 1849 by Philippi) The small, conical shell is perforate, and transversely striate. It color is white, radiated with rose. The shell is angular below the suture, the angle nodose. The body whorl is carinated in the middle. The base is rounded. The aperture as high as wide. The throat is striated. The columella is arcuate, terminating in a bipartite tooth at the base.

(Further description by G.W. Tryon) There are 5 whorls. Above the shoulder angle there are two shallow spiral furrows. Between this and the peripheral carina there are 4, of equal breadth to the elevated interspaces; and on the base about 12. [4]

Distribution

This species occurs in the Red Sea and in the Indian Ocean off Djibouti, the Mascarene basin, Kenya, Mozambique and Tanzania.

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References

  1. ↑ Nevill, Journ. Asiat. Soc. Beng., 1874, p. 27, t. 1, f. 3, and I. c. 1875, p. 103.
  2. 1 2 3 Clanculus tonnerrei (G. Nevill & H. Nevill, 1874) . Retrieved through: World Register of Marine Species  on 29 June 2011.
  3. ↑ H. Pilsbry, Manual of Conchology XI, Academy of Natural Sciences, Philadelphia (described as Trochus satrapius)
  4. ↑ Tryon (1889), Manual of Conchology XI, Academy of Natural Sciences, Philadelphia (described as Trochus bicinctus)

Further reading

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