Physical Description

Type Information

Holotype for Turbonilla (Ptycheulimella) abreojensis Dall & Bartsch, 1909
Catalog Number: USNM 205951
Collection: Smithsonian Institution, National Museum of Natural History, Department of Invertebrate Zoology
Preparation: Dry
Collector(s): H. Hemphill
Locality: Point Abreojos, Baja California Sur, Mexico, North Pacific Ocean
  • Holotype: Bull. U.S. Nat. Mus. 68: p. 59, pl. 5, fig. 7.
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© Smithsonian Institution, National Museum of Natural History, Department of Invertebrate Zoology

Source: National Museum of Natural History Collections

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Wikipedia

Turbonilla abreojensis

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

Contents

Description

The milk-white shell has a conic shape. (The whorls of the protoconch are decollated.) The length of the shell measures just over 5 mm. The ten whorls of the teleoconch are moderately well rounded, and very slightly shouldered at the summit. They are marked by mere indications of obsolete ribs near the summit of the early whorls, only. The sutures are well impressed. The periphery is well rounded. The base of the shell is moderately long, and well rounded. The surface of the spire and the base is marked by fine, closely crowded, spiral striations. The aperture is oval. The posterior angle is acute. The columella is rather strong, moderately curved, and somewhat revolute. It is provided with an oblique fold a little anterior to the insertion. [1]

Distribution

This species occurs in the Pacific Ocean off Baja California.

References

  1. ^ a b Dall & Bartsch (1909), A Monograph of West American Pyramidellid Mollusks, United States National Mollusks, bulletin 68; p. 59
  2. ^ Rosenberg, G. (2012). Turbonilla abreojensis Dall & Bartsch, 1909. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=575950 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:
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