Turbonilla gibbosa

Turbonilla gibbosa is a species of sea snail, a marine gastropod mollusk in the family Pyramidellidae, the pyrams and their allies.[2][3]

Turbonilla gibbosa
Fragment of a shell of Turbonilla gibbosa
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Heterobranchia
Family: Pyramidellidae
Genus: Turbonilla
Species:
T. gibbosa
Binomial name
Turbonilla gibbosa
(Carpenter, 1857)
Synonyms
  • Chemnitzia gibbosa Carpenter, 1856 (basionym) [1]
  • Turbonilla (Pyrgolampros) gibbosa (Carpenter, 1857)

Description

The reddish brown shell has an irregular pupiform shape. The length of its shell measures 6.75 mm. (The whorls of the protoconch are decollated.) The ten whorls of the teleoconch are flattened,. They are marked with about eighteen poorly developed, more or less rounded, vertical axial ribs and smooth intercostal spaces. This species is described, although from a solitary and very imperfect specimen, in consequence of its great peculiarity of form, in which it resembles Chrysallida. It is short, stumpy, and very broad; without any trace of fold on the columella or notch on the base.[4]

Distribution

The type specimen was found in the Pacific Ocean off Mazatlán, Baja California.

References
  1. Carpenter, Cat. Mazatlan Shells, 1856, p. 430
  2. WoRMS (2011). Turbonilla gibbosa (Carpenter, 1857). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=576021 on 2012-03-01
  3. Keen M. (1971). Sea shells of Tropical West America. Marine mollusks from Baja California to Perú. (2nd edit.). Stanford University Press pp. 1064
  4. Dall & Bartsch (1909), A Monograph of West American Pyramidellid Mollusks, United States National Museum Bulletin 68, p. 61
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