Calliostoma jujubinum

Calliostoma jujubinum
Drawing with an apertural view of a shell of Calliostoma jujubinum
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Vetigastropoda
Order:	Trochida
Superfamily:	Trochoidea
Family:	Calliostomatidae
Genus:	Calliostoma
Species:	C. jujubinum
Binomial name
Calliostoma jujubinum (Gmelin, 1791) [1]
Synonyms
Calliostoma perspectivumKoch, F.C.L. in Philippi, R.A., 1843 Calliostoma prejujubinumOlsson, A.A. & A. Harbison, 1953 (fossil) Eutrochus alternatus Sowerby III, 1873 Trochus jujubinusGmelin, 1791 (original combination) Trochus lunatusRöding, 1798 Trochus perspectivusKoch, 1843 Calliostoma rawsoniDall, W.H., 1889 Zizyphinus jujubinum(Gmelin, 1791)

Calliostoma jujubinum, common name the jujube top shell, is a species of sea snail, a marine gastropod mollusk in the family Calliostomatidae. ^[2]

Description

The size of the shell varies between 13 mm and 34 mm. The solid, heavy shell has a pyramidal-conic shape. It has a narrowly perforate funnel-shaped umbilicus. Its color is chestnut-brown, purple-brown on the upper whorls. It is marked with narrow, curved, rather widely separated longitudinal white streaks. The base of the shell is minutely dotted with white. The sculpture consists of numerous little-elevated spiral beaded lirulae, with many spiral striae between them. The base is flat and has coarser concentric subgranulose lirae, becoming finer toward the outer margin. The spire was elevated. There are about 10 whorls, concave above, swollen and projecting at the periphery, the last obtusely angled. The oblique aperture is quadrate. The outer lip is beveled, strongly 5 or 6 lirate within. The basal lip is straight, very thick, obtuse, crenulate, lirate inside. The columella is arcuate, ending below in a point or tooth. The umbilicus is white within. The young specimens have a minute smooth, rounded, rather elevated dextral nucleus, and bicingulate periphery. ^[3]

Distribution

This species occurs in the Gulf of Mexico, the Caribbean Sea and off the Lesser Antilles; in the Atlantic Ocean from North Carolina to Southern Brazil at depths between 0 m and 192 m.

References

1. Gmelin, J. F. 1791. Systema naturae per regna tria naturae. Editio decima tertia. Systema Naturae, 13th ed., vol. 1(6): 3021–3910. Lipsiae
2. Calliostoma jujubinum (Gmelin, 1791) . Retrieved through: World Register of Marine Species  on 22 April 2010.
3. Tryon (1889), Manual of Conchology XI, Academy of Natural Sciences, Philadelphia

• Röding, P. F. 1798. Museum Boltenianum. viii + 199 pp. Hamburg.
• Philippi, R. A. 1843. Trochus. Abbildungen und Beschreibungen neuer oder wenig gekannter Conchylien 1(2–3): 31–34, 65–69, pl. 1–2.
• Dall, W. H. 1889. Reports on the results of dredgings, 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,'. Bulletin of the Museum of Comparative Zoology 18: 1–492, pls. 10–40.
• Olsson, A. A. and A. Harbison. 1953. Pliocene Mollusca of Southern Florida, with special reference to those from North Saint Petersburg. Monographs of the Academy of Natural Sciences of Philadelphia 8: vii + 459, 65 pls.
• 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.

External links

• "Calliostoma jujubinum". Gastropods.com. Retrieved 15 January 2019.