Granigyra limata

Granigyra limata
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
(unranked):	clade Vetigastropoda
Superfamily:	Seguenzioidea (unassigned)
Genus:	Granigyra
Species:	G. limata
Binomial name
	Granigyra limata; (Dall, 1889)
Synonyms
	Cyclostrema limatum Dall, 1889 (basionym); Ganesa limata (Dall, 1889);

Granigyra limata is a species of sea snail, a marine gastropod mollusk, unassigned in the superfamily Seguenzioidea.[1]

Description

(Original description by W.H. Dall) The size of the shell varies between 2 mm and 2.5 mm. The small, white shell has almost exactly the shape of Trochus fulgidus Jeffreys, but a little smaller, with three extremely rounded whorls covered with small close-set irregular granulations of nearly uniform size like sand grains. The base of the shell has a small perforate umbilicus, into which the whorl rounds without carina, callus, or break of any kind. The circular aperture has thin, sharp, uniform, not reflected margins. This singular little shell has the typical characteristics of a Cyclostrema in its conchological features, except for its granular surface.[2]

Distribution

This species occurs in the Gulf of Mexico and in the Atlantic Ocean off Georgia, US.

References

Rosenberg, G., F. Moretzsohn, and E. F. García. 2009. Gastropoda (Mollusca) of the Gulf of Mexico, Pp. 579–699 in Felder, D.L. and D.K. Camp (eds.), Gulf of Mexico–Origins, Waters, and Biota. Biodiversity. Texas A&M Press, College Station, Texas

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[WoRMS-1] Granigyra limata (Dall, 1889). Retrieved through: World Register of Marine Species on 26 March 2013.

[2] Dall W. H. 1889. Reports on the results of dredging, under the supervision of Alexander Agassiz, in the Gulf of Mexico (1877–78) and in the Caribbean Sea (1879–80), by the U.S. Coast Survey Steamer "Blake", Lieut.-Commander C.D. Sigsbee, U.S.N., and Commander J.R. Bartlett, U.S.N., commanding. XXIX. Report on the Mollusca. Part 2, Gastropoda and Scaphopoda. Bulletin of the Museum of Comparative Zoölogy at Harvard College 18: 1–492, pls. 10–40 (described as Cyclostrema limatum)