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Taxon profile

species

Odostomia guatulcoensis J. G. Hertlein & A. M. Strong, 1951

kingdom Animalia - animals »  phylum Mollusca - mollusks »  class Gastropoda - gastropods »  order Allogastropoda »  family Pyramidellidae »  genus Odostomia

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Odostomia guatulcoensis

Author: Hertlein, L.G. & Strong, A.M.

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Description

Shell small, elongate-ovate, vitreous; nucleus decollated; normal whorls 5, almost flatsided; sculptured with broad spiral cords with narrow interspaces, bearing axially elongated nodules arranged in retractive axial rows on the upper whorls, 24 rows appearing on the penultimate whorl, on about the third whorl a fifth smooth cord begins to appear in the suture and rapidly increases in strength until on the penultimate whorl it equals the others in strength and spacing; periphery marked by a smooth cord slightly narrower than the one preceding it; base short, marked with 5 strong cords; aperture ovate, outer lip thin, columella appressed to the base, with a strong fold at its insertion. The type measures: length, 2.0 mm.; diameter, 1.0 mm.
Hertlein, L.G. & Strong, A.M., 1951; Mollusks from the W. Coast of Mexico & Central America. Part 10

Interchangeable taxa

The shell of this species differs from that of Odostomia (Chrysallida) promeces Dall & Bartsch in that the base is sculptured with 5 rather than 3 spiral cords.
Hertlein, L.G. & Strong, A.M., 1951; Mollusks from the W. Coast of Mexico & Central America. Part 10

Distribution

Pacific Central America. Near Port Guatulco, Mexico.
Author: Jan Delsing

Similar species

Odostomia promeces W. H. Dall & P. Bartsch, 1909

Links and literature

EN Galli C.: WMSDB - Wolrdwide Mollusc Species Data Base July 10, 2013 [http://www.bagniliggia.it/WMSD/WMSDhome....] [as Odostomia guatulcoensis Hertlein & Strong, 1951]
Data retrieved on: 23 November 2013

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