Curtitoma decussata

Curtitoma decussata
	Drawing of a shell of Curtitoma decussata
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Caenogastropoda
Order:	Neogastropoda
Superfamily:	Conoidea
Family:	Mangeliidae
Genus:	Curtitoma
Species:	C. decussata
Binomial name
	Curtitoma decussata; (Couthouy, 1839)
Synonyms[1]
	Bela decussata (Couthouy, 1839) not (Locard, 1892); Bela tenuicostata var. frielei Friele, 1886; Lora tenuicostata (G.O. Sars, 1878); Oenopota decussata Couthouy; Oenopota decussatus (Couthouy, 1839); Pleurotoma decussata Couthouy, 1839;

Curtitoma decussata is a species of sea snail, a marine gastropod mollusk in the family Mangeliidae.[1]

Description

The length of the shell varies between 5 mm and 13 mm.

The shell has an ovate-fusiform shape, with a moderate, scarcely turreted spire. It contains six or seven round-shouldered whorls. The sculpture consists of about 24 sigmoid longitudinal ribs, evanescing about the middle of the body whorl, and close revolving striae across the ribs. The sinus is well marked, close to the suture. The siphonal canal is narrowed, but short. The columella is nearly straight in the middle. The color of the shell is white, yellowish or pinkish white.[2]

Distribution

This marine species is circum-arctic and occurs in the Northwest Atlantic Ocean, Canada and the Gulf of Maine; on the continental shelf of the Alaskan Beaufort Sea;[3] found at depths between 25 m and 780 m. It has also been found as a fossil in Quaternary strata of Greenland and Iceland; age range: 2.588 to 0.781 Ma.[4]

References

Couthouy, J. P. (1839) Monograph on the family Osteodesmacea of Deshayes, with remarks on two species of Patelloidea and descriptions of new species of marine shells, a species of Anculotus and one of Eolis. Boston Journal of Natural History, 2 (2) : 129–189.
Brunel, P.; Bosse, L.; Lamarche, G. (1998). Catalogue of the marine invertebrates of the estuary and Gulf of St. Lawrence. Canadian Special Publication of Fisheries and Aquatic Sciences, 126. 405 p
A. J. W. Hendy, D. P. Buick, K. V. Bulinski, C. A. Ferguson, and A. I. Miller. 2008. Unpublished census data from Atlantic coastal plain and circum-Caribbean Neogene assemblages and taxonomic opinions.

External links

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[WoRMS-1] Curtitoma decussata (Couthouy, 1839). Retrieved through: World Register of Marine Species on 8 August 2011.

[2] G.W. Tryon (1884) Manual of Conchology, structural and systematic, with illustrations of the species, vol. VI; Philadelphia, Academy of Natural Sciences

[3] Konar, Brenda, and Alexandra M. Ravelo. Epibenthic Community Variability on the Alaskan Beaufort Sea Continental Shelf. Coastal Marine Institute, School of Fisheries and Ocean Sciences, University of Alaska, 2013.

[4] Fossilworks: Curtitoma decussata