Tibatrochus incertus

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Tibatrochus incertus
Tibatrochus incertus 001.jpg
Original drawing of a shell of Tibatrochus incertus
Scientific classification Red Pencil Icon.png
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Vetigastropoda
Superfamily: Seguenzioidea
Family: Eucyclidae
Genus: Tibatrochus
Species:
T. incertus
Binomial name
Tibatrochus incertus
(Schepman, 1908)
Synonyms [1]
  • Priotrochus incertusSchepman, 1908

Tibatrochus incertus is a species of sea snail, a marine gastropod mollusk in the family Eucyclidae. [1] [2] [3]

Contents

Description

(Original description by M.M. Schepman) The size of the shell varies between 2.5 mm and 6.1 mm. The imperforate, yellowish-white shell has a conical shape with a convex base, . The six convex whorls are separated by a deep suture, which is waved by the ends of the ribs. The nucleus is smooth, the other whorls have strong ribs, of which there are 12 on the body whorl. They are crossed on the lower whorls by 2 spiral cords, producing tubercles on the ribs. These ribs extend on the base till the first infraperipheral cord. The base of the shell is convex, with 5 spiral lirae. The whole shell is covered with microscopic, oblong punctures. The aperture is nearly circular. The thin outer and basal margin are regularly curved, and slightly thickened interiorly. The columella is nearly straight, with an inconspicuous tubercle about halfway, near the base with a rounded angle. The inside of the aperture is nacreous. [4]

Distribution

This marine species occurs off Indonesia and the Philippines.

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References

  1. 1 2 Bouchet, P. (2012). Tibatrochus incertus (Schepman, 1908). Retrieved through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=547233 on 2013-04-14
  2. ↑ Poppe G.T., Tagaro S.P. & Dekker H. (2006) The Seguenziidae, Chilodontidae, Trochidae, Calliostomatidae and Solariellidae of the Philippine Islands. Visaya Supplement 2: 1-228.
  3. ↑ Higo, S., Callomon, P. & Goto, Y. (1999) Catalogue and Bibliography of the Marine Shell-Bearing Mollusca of Japan. Elle Scientific Publications, Yao, Japan, 749 pp.
  4. ↑ Schepman, M. M. (1908). The Prosobranchia of the Siboga Expedition. Part I. Rhipidoglossa and Docoglossa. Siboga-Expeditie. 49 (1)a. Leyden: E. J. Brill. pp. 45–46. Siboga expeditie at the Internet Archive .
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