Turbonilla muricatoides

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Turbonilla muricatoides
Turbonilla muricatoides 001.png
Drawing of a shell of Turbonilla muricatoides
Scientific classification Red Pencil Icon.png
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Heterobranchia
Family: Pyramidellidae
Genus: Turbonilla
Species:
T. muricatoides
Binomial name
Turbonilla muricatoides
Dall & Bartsch, 1907 [1]
Synonyms

Turbonilla (Chemnitzia) muricatoidesDall and Bartsch, 1907

Contents

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

Description

The small, slender shell is subdiaphanous to milk white. Its length measures 3 mm. The 2½ whorls of the protoconch are helicoid but slightly elevated and well rounded. Their axis is at right angles to the axis of the teleoconch. The seven whorls of the teleoconch are smooth, rather high between the sutures, and moderately rounded. They are marked by strong sublamellar axial ribs, wliich are about half as wide as the spaces that separate them, and extend strongly to the very summit of the whorl where they render the well-marked sutures crenulate. There are 14 of these ribs upon the first, 18 upon the fifth, and 20 upon the penultimate turn. The depressed intercostal spaces terminate abruptly at the periphery. The base of the body whorl is well rounded, smooth and without sculpture. The outer lip of the type specimen is fractured, giving no indication about the aperture. The columella is slender and slightly twisted. [4]

Distribution

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

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References

  1. ↑ Dall and Bartsch, Proc. U. S. Nat. Mus., vol. 33, 1907, p. 495, pi. 14, figs. 2, 2a.
  2. ↑ Rosenberg, G. (2011). Turbonilla muricatoides. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=581349 on 2012-04-21
  3. ↑ Turgeon, D.; Quinn, J.F.; Bogan, A.E.; Coan, E.V.; Hochberg, F.G.; Lyons, W.G.; Mikkelsen, P.M.; Neves, R.J.; Roper, C.F.E.; Rosenberg, G.; Roth, B.; Scheltema, A.; Thompson, F.G.; Vecchione, M.; Williams, J.D. (1998). Common and scientific names of aquatic invertebrates from the United States and Canada: mollusks. 2nd ed. American Fisheries Society Special Publication, 26. American Fisheries Society: Bethesda, MD (USA). ISBN   1-888569-01-8. IX, 526 + cd-rom pp.
  4. ↑ Dall & Bartsch (1909), A monograph of West American pyramidellid mollusks, United States National Museum, bulletin 68, p. 38-39 (described as Turbonilla (Chemnitzia) muricatoides)


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