Cordieria rouaultii

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Cordieria rouaultii
Cordieria rouaultii 001.jpg
Original drawing of a shell of Cordieria rouaultii
Scientific classification Red Pencil Icon.png
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Clade: Caenogastropoda
Clade: Hypsogastropoda
Clade: Neogastropoda
Superfamily: Conoidea
Family: Borsoniidae
Genus: Cordieria
Species:
C. rouaultii
Binomial name
Cordieria rouaultii
(Dall, 1889)
Synonyms [1]

Borsonia rouaultiiDall, 1889 (original combination)

Contents

Cordieria rouaultii is a species of sea snail, a marine gastropod mollusk in the family Borsoniidae. [1]

Sea snail common name for snails that normally live in saltwater

Sea snail is a common name for slow moving marine gastropod molluscs usually with visible external shells, such as whelk or abalone. They share the taxonomic class Gastropoda with slugs, which are distinguished from snails primarily by the absence of a visible shell.

Family is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy; it is classified between order and genus. A family may be divided into subfamilies, which are intermediate ranks between the ranks of family and genus. The official family names are Latin in origin; however, popular names are often used: for example, walnut trees and hickory trees belong to the family Juglandaceae, but that family is commonly referred to as being the "walnut family".

Borsoniidae family of molluscs

Borsoniidae is a monophyletic family of small to medium-sized sea snails, marine gastropod mollusks in the superfamily Conoidea.

Description

The size of the shell attains 14 mm, its width 5 mm.

(Original description) The shell is yellowish white with a pink vertex and the interspaces between the ribs of a pink brown, generally rather pale. The shell contains seven or eight whorls, two of which belong to the nucleus. The nucleus is glassy polished, smooth, swollen, rounded, its second whorl with an obsolete peripheral keel . The remainder of the shell has a rather strong sculpture. The spiral sculpture consists of three or four strong and a few much finer ridges between the sutures and in front of the anal fasciole. On the body whorl these continue over the base and siphonal canal. The anal fasciole shows only traces of the finer spiral threads. The transverse sculpture consists of nine stout short waves, or rounded ribs, with narrower interspaces, beginning in front of the fasciole and becoming obsolete in front of the whorl toward the canal. It also shows rather coarse, strong, and somewhat irregular incremental lines. And where the fasciole borders on the suture, the arched incremental lines are crowded into a series of not very regular plications, which form a band or series in front of the suture. The fasciole is slightly excavated. The surface of the shell carries a yellowish opaque thin epidermis. The whorls are moderately rounded. The base of the shell is subconical. The siphonal ; canal is short, rather large, slightly recurved and flaring at the tip. The anal sinus is rounded and rather shallow. The outer lip is convexly arched, sharp-edged, with or without a rib behind it, according to the stage of growth, with no varix. The aperture is narrow, long lirate in the throat. The columella is straight, near its junction with the body having two strong plaits, which continue internally to the apex of the shell. The inner lip has a coat of callus, somewhat reflected anteriorly in the adult. [2]

Whorl (mollusc)

A whorl is a single, complete 360° revolution or turn in the spiral growth of a mollusc shell. A spiral configuration of the shell is found in of numerous gastropods, but it is also found in shelled cephalopods including Nautilus, Spirula and the large extinct subclass of cephalopods known as the ammonites.

Sculpture (mollusc)

Sculpture is a feature of many of the shells of mollusks. It is three-dimensional ornamentation on the outer surface of the shell, as distinct from either the basic shape of the shell itself or the pattern of colouration, if any. Sculpture is a feature found in the shells of gastropods, bivalves, and scaphopods. The word "sculpture" is also applied to surface features of the aptychus of ammonites, and to the outer surface of some calcareous opercula of marine gastropods such as some species in the family Trochidae.

In anatomy, a suture is a fairly rigid joint between two or more hard elements of an organism, with or without significant overlap of the elements.

This shell, owing to the coarseness of its sculpture, has a somewhat rude appearance, and is very characteristic.

Distribution

This marine species occurs in the Caribbean Sea and off Barbados and Puerto Rico

Caribbean Sea A sea of the Atlantic Ocean bounded by North, Central, and South America

The Caribbean Sea is an American Mediterranean Sea of the Atlantic Ocean in the tropics of the Western Hemisphere. It is bounded by Mexico and Central America to the west and south west, to the north by the Greater Antilles starting with Cuba, to the east by the Lesser Antilles, and to the south by the north coast of South America.

Barbados Country in the Caribbean

Barbados is an island country in the Lesser Antilles of the West Indies, in the Caribbean region of North America. It is 34 kilometres in length and up to 23 km (14 mi) in width, covering an area of 432 km2 (167 sq mi). It is situated in the western area of the North Atlantic and 100 km (62 mi) east of the Windward Islands and the Caribbean Sea; therein, Barbados is east of the Windwards, part of the Lesser Antilles, roughly at 13°N of the equator. It is about 168 km (104 mi) east of both the countries of Saint Lucia and Saint Vincent and the Grenadines and 180 km (110 mi) south-east of Martinique and 400 km (250 mi) north-east of Trinidad and Tobago. Barbados is outside the principal Atlantic hurricane belt. Its capital and largest city is Bridgetown.

Puerto Rico Unincorporated territory of the United States

Puerto Rico, officially the Commonwealth of Puerto Rico and briefly called Porto Rico, is an unincorporated territory of the United States located in the northeast Caribbean Sea, approximately 1,000 miles (1,600 km) southeast of Miami, Florida.

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References

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