''Turbo excellens'' is a
species
In biology, a species is the basic unit of Taxonomy (biology), 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 ...
of
sea snail, a
marine
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Ocean
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* ...
gastropod mollusk
Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks (). Around 85,000 extant species of molluscs are recognized. The number of fossil species is es ...
in the
family
Family (from la, familia) is a group of people related either by consanguinity (by recognized birth) or affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its members and of society. Idea ...
Turbinidae
Turbinidae, the turban snails, are a family of small to large marine gastropod molluscs in the superfamily Trochoidea.Bouchet, P. (2014). Turbinidae Rafinesque, 1815. Accessed through: World Register of Marine Species at http://www.marinespec ...
, the turban snails.
[WoRMS (2012). ''Turbo excellens'' G.B. Sowerby III, 1914. Accessed through: ]World Register of Marine Species
The World Register of Marine Species (WoRMS) is a taxonomic database that aims to provide an authoritative and comprehensive list of names of marine organisms.
Content
The content of the registry is edited and maintained by scientific speciali ...
at http://www.marinespecies.org/aphia.php?p=taxdetails&id=534212 on 2012-09-01
Distribution
This marine species occurs off
Japan.
Description
The length of the shell varies between 10 mm and 22 mm. The imperforate shell has a globose-turbinate shape. Its color pattern is pale fleshy, vividly painted with reddish brown. The conic spire contains five convex
whorl
A whorl ( or ) is an individual circle, oval, volution or equivalent in a whorled pattern, which consists of a spiral or multiple concentric objects (including circles, ovals and arcs).
Whorls in nature
File:Photograph and axial plane flo ...
s with narrowly channelled
sutures. The whorls are spirally lirated with minute nodules. The penultimate whorl is trilirate. The
body whorl is inflated, globose and almost square-shaped. The
aperture
In optics, an aperture is a hole or an opening through which light travels. More specifically, the aperture and focal length of an optical system determine the cone angle of a bundle of rays that come to a focus in the image plane.
An ...
is subcircular and silvery white on the inside. The
peristome Peristome (from the Greek ''peri'', meaning 'around' or 'about', and ''stoma'', 'mouth') is an anatomical feature that surrounds an opening to an organ or structure. Some plants, fungi, and shelled gastropods have peristomes.
In mosses
In mosses, ...
is simple. The white
columella
Lucius Junius Moderatus Columella (; Arabic: , 4 – ) was a prominent writer on agriculture in the Roman Empire.
His ' in twelve volumes has been completely preserved and forms an important source on Roman agriculture, together with the ...
is thick and smooth. The operculum is almost round. Its outer surface is white, very convex and everywhere minutely granulate.
G.B. Sowerby III, Descriptions of fifteen new Japanese mollusca; The Annals and magazine of natural history, 8th ser. v. 14 (1914)
/ref>
Notes
Additional information regarding this species:
References
External links
Encyclopedia of Life
World Register of Marine Species
*
{{Taxonbar, from=Q7853842
excellens
Gastropods described in 1914