Gymnobela dubia

Gymnobela dubia is a species of sea snail, a marine gastropod mollusk in the family Raphitomidae.[1]

Gymnobela dubia
Original image of a shell of Gymnobela dubia
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Clade: Caenogastropoda
Clade: Hypsogastropoda
Clade: Neogastropoda
Superfamily: Conoidea
Family: Raphitomidae
Genus: Gymnobela
Species:
G. dubia
Binomial name
Gymnobela dubia
(Schepman, 1913)
Synonyms[1]

Pleurotomella dubia Schepman, 1913

Description

The length of the shell attains 16¾ mm, its diameter 6½ mm.

(Original description) The thin, fusiform shell is transparently white. It contains about 9 whorls of which about 3 form a reddish-brown protoconch, with crossed riblets. The subsequent whorls are angular, the upper part excavated, with remote, faint, axial plicae below the suture, nearly lacking in the body whorl. The lower part shows rounded, more or less oblique ribs, ending above, just below the excavation, in bluntly pointed tubercles, 13 or 14 on the body whorl. Otherwise this lower part is smooth, but for numerous growth-striae and a few, scarcely appreciable, spiral striae. Near the base of the body whorl however and especially on the rather long, narrow siphonal canal, numerous spirals make their appearance. The aperture is elongately ovate, with a sharp angle above, a narrow gutter-like siphonal canal below. The peristome is thin (broken), according to growth-lines with a wide, shallow sinus above. The columellar margin is rather straight, with a thin layer of enamel. [2]

Distribution

This marine species was found in the Ceram Sea, Indonesia, at a depth of 835 mm.

References
  1. Gymnobela dubia (Schepman, 1913). Retrieved through: World Register of Marine Species on 29 March 2010.
  2. Schepman, 1913. The prosobranchia of the Siboga expedition. Part IV -V - VI: Toxoglossa This article incorporates text from this source, which is in the public domain.
  • Sysoev, Alexander (1997). Crosnier, A.; Bouchet, P. (eds.). "Mollusca Gastropoda: New deep-water turrid gastropods (Conoidea) from eastern Indonesia" (PDF). Résultats des Campagnes MUSORSTOM. Mém. Mus. natn. Hist. nat. 16 (172): 325–355. ISBN 2-85653-506-2. Retrieved 11 October 2014.
  • Tucker, J.K. (2004). "Catalog of recent and fossil turrids (Mollusca: Gastropoda)" (PDF). Zootaxa. 682: 1–1295.
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