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Taxon profile

species

Calliostoma joanneae Olsson, 1971

kingdom Animalia - animals »  phylum Mollusca - mollusks »  class Gastropoda - gastropods »  order Trochida »  family Calliostomatidae »  genus Calliostoma

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Calliostoma joanneae

Author: Olsson, A.A.

Taxon in country check-lists*

Pacific Ocean, North America: Panama

* List of countries might not be complete

Description

The shell is small, high, conic, with about seven coarsely sculptured whorls separated by deeply excavated sutures. The sculpture consists of three noded primary spiral cords on each whorl; the first, or lowest, forms a blunt, but not prominent, peripheral keel on the body whorl and an overhand on the whorls of the spire; the second cord, somewhat smaller, encircles the middle of each whorl; and the third and smallest borders the suture above; the interval between each pair of primary cords carries a fine, spiral thread. The base is flattened, sloping inward toward the middle; it carries at its outer edge a prominent, smoothish cord along which the coiling proceeds, hence it is concealed in the sutures on the spire. A series of nine somewhat alternating cords extends from the pillar outward toward a wide, flat, marginal circle marked with three smaller raised threads. Measurements.—Height 8.7 mm, diameter 7.7 mm; holotype. Holotype.—USNM No. 701165, PILLSBURY Sta. P-500.
Material Examined.—The holotype, a single specimen without soft parts, from Sta. P-500, Gulf of Panama, 7°59.7'N, 79°49.7'W, 53 m, 2 May 1967.
Olsson A A - 1972 - Mollusks from the Gulf of Panama collected by R V John Elliott Pillsbury 1967
Author: Jan Delsing

Links and literature

EN Galli C.: WMSDB - Wolrdwide Mollusc Species Data Base July 10, 2013 [http://www.bagniliggia.it/WMSD/WMSDhome....] [as Calliostoma joanneae Olsson, 1971]
Data retrieved on: 21 July 2015

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