Azorilla lottae

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Azorilla lottae
Azorilla lottae 001.jpg
Original image of a shell of Azorilla lottae
Scientific classification Red Pencil Icon.png
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Clade: Caenogastropoda
Clade: Hypsogastropoda
Clade: Neogastropoda
Superfamily: Conoidea
Family: Raphitomidae
Genus: Azorilla
Species:
A. lottae
Binomial name
Azorilla lottae
(Verrill, 1885)
Synonyms [1]

Pleurotomella lottaeVerrill, 1885

Azorilla lottae is a species of sea snail, a marine gastropod mollusk in the family Raphitomidae. [1]

In biology, a species ( ) is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. Other ways of defining species include their karyotype, DNA sequence, morphology, behaviour or ecological niche. In addition, paleontologists use the concept of the chronospecies since fossil reproduction cannot be examined. While these definitions may seem adequate, when looked at more closely they represent problematic species concepts. For example, the boundaries between closely related species become unclear with hybridisation, in a species complex of hundreds of similar microspecies, and in a ring species. Also, among organisms that reproduce only asexually, the concept of a reproductive species breaks down, and each clone is potentially a microspecies.

Sea snail common name for snails that normally live in saltwater

Sea snail is a common name for snails that normally live in salt water, in other words marine gastropods. The taxonomic class Gastropoda also includes snails that live in other habitats, such as land snails and freshwater snails. Many species of sea snails are edible and exploited as food sources by humans.

Family is one of the eight major hierarcical 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".

Contents

Description

The length of the shell attains 11.5 mm, its diameter 7.5 mm.

(Original description) The small, short shell has an ovate-fusiform shape. it is moderately stout, with slightly shouldered, convex whorls, and a regularly tapered, acute spire. The Suture is shallow, but well-marked. The shell consists of 4½ worls, besides the large protoconch, which consists of about 3½ gradually increasing whorls. The whorls of the spire are obscurely shouldered at about the middle, above which the broad, sloping subsutural band is slightly concave. The sculpture on the penultimate whorl consists of about six elevated, rounded, revolving cinguli, with some much finer intermediate ones; some of the smaller cinguli are also found on the subsutural band. The transverse sculpture consists of fine, slightly flexuous lines of growth, crossing both the cinguli and their intervals, and on the subsutural band becoming more prominent in the form of oblique, recurved riblets, which do not take the form of nodules. On the body whorl the revolving cinguli continue at about uniform distances over the entire whorl and siphonal canal, but anteriorly the cinguli thicken and are wider than the grooves, while on the convex part of the whorl they are narrower than the intervals. The aperture is broad-ovate, rather large, acute posteriorly. The outer lip is thin, strongly convex in the middle, with a broad and shallow posterior sinus above the shoulder. The siphonal canal is short, straight, not contracted at the base. The columella is straight in the middle, with an oblique anterior edge. The inner margin of the aperture is strongly excavated and subangular at the base of the columella. There is no umbilicus . The animal is destitute of an operculum. The protoconch whorls are deep chestnut-brown, very minutely reticulated by oblique lines running in two directions. The whorls are regularly convex, the apical ones minute and a little prominent, so that the apex is acute. The color of the shell below the brown protoconch is translucent bluish white, with a somewhat glossy surface; when dead, yellowish white. [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.

Spire (mollusc)

A spire is a part of the coiled shell of molluscs. The spire consists of all of the whorls except for the body whorl. Each spire whorl represents a rotation of 360°. A spire is part of the shell of a snail, a gastropod mollusc, a gastropod shell, and also the whorls of the shell in ammonites, which are fossil shelled cephalopods.

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.

Distribution

This marine species occurs off the New Jersey, USA.

New Jersey State of the United States of America

New Jersey is a state in the Mid-Atlantic region of the Northeastern United States. It is a peninsula, bordered on the north and east by the state of New York, particularly along the extent of the length of New York City on its western edge; on the east, southeast, and south by the Atlantic Ocean; on the west by the Delaware River and Pennsylvania; and on the southwest by the Delaware Bay and Delaware. New Jersey is the fourth-smallest state by area but the 11th-most populous, with 9 million residents as of 2017, and the most densely populated of the 50 U.S. states; its biggest city is Newark. New Jersey lies completely within the combined statistical areas of New York City and Philadelphia and was the second-wealthiest U.S. state by median household income as of 2017.

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References