''Eurytrochus danieli'' is a

species 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 s ...

of sea snail, a marine 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 e ...

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 ...

Trochidae The Trochidae, common name top-snails or top-shells, are a family of various sized sea snails, marine gastropod molluscs in the subclass Vetigastropoda. This family is commonly known as the top-snails because in many species the shell resemb ...

, the top snails.Bouchet, P. (2012). ''Eurytrochus danieli'' (Crosse, 1862). 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 specialis ...

at http://www.marinespecies.org/aphia.php?p=taxdetails&id=547319 on 2012-11-23

Description

The shell grows to a length of 6 mm. The narrowly umbilicate shell is depressed conoidal, and solid. This lusterless shell is whitish. The upper surface is spirally banded with dark brown. The apex is roseate. The base of the shell is light, and clouded with brown. The spiral is low-conoidal. The

apex The apex is the highest point of something. The word may also refer to: Arts and media Fictional entities * Apex (comics), a teenaged super villainess in the Marvel Universe * Ape-X, a super-intelligent ape in the Squadron Supreme universe *Apex, ...

is acute. The sutures are well impressed. The five

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 floral ...

s are somewhat convex, spirally coarsely ridged. The ridges are not beaded. They number about 4 to 6 above the periphery, but are more numerous on the base The whole surface is closely, minutely, densely, spirally and radiately striate. The body whorl is slightly descending at 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 ...

. It is rounded or subcarinate at periphery. The aperture is quite oblique, rounded-subquadrate. The outer lip is slightly crenulated, and margined inside by a thin opaque white band, silvery and showing folds in the nacre within. The

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 wo ...

is oblique, sinuous, and a little thickened in the middle. The umbilicus is deep, narrow, and bounded by a smooth rib.Tryon (1889), Manual of Conchology XI, Academy of Natural Sciences, Philadelphia
(described as ''Gibbula danieli'')

Distribution

This marine species occurs off North

Queensland ) , nickname = Sunshine State , image_map = Queensland in Australia.svg , map_caption = Location of Queensland in Australia , subdivision_type = Country , subdivision_name = Australia , established_title = Before federation , establishe ...

, Australia, New Caledonia, Fiji,

Samoa Samoa, officially the Independent State of Samoa; sm, Sāmoa, and until 1997 known as Western Samoa, is a Polynesian island country consisting of two main islands ( Savai'i and Upolu); two smaller, inhabited islands ( Manono and Apolima); ...

and the

Philippines The Philippines (; fil, Pilipinas, links=no), officially the Republic of the Philippines ( fil, Republika ng Pilipinas, links=no), * bik, Republika kan Filipinas * ceb, Republika sa Pilipinas * cbk, República de Filipinas * hil, Republ ...

References

* Crosse, H., 1862. Diagnoses d'espèces nouvelles de l'archipel calédonien, vol. 10, p. 405-408 * Smith, E.A., 1897. ''Notes on some type-specimens in the British Museum''. Proc. Malac. Soc. Lond., 2(5):229-232. * Hedley, C., 1923. ''Studies on Australian Mollusca. Part XIV''. Proc. Linn. Soc. N.S.W, 48 * Wilson, B., 1993. ''Australian Marine Shells. Prosobranch Gastropods''. Odyssey Publishing, Kallaroo, WA * Poppe G.T., Tagaro S.P. & Dekker H. (2006) The Seguenziidae, Chilodontidae, Trochidae, Calliostomatidae and Solariellidae of the Philippine Islands. Visaya Supplement 2: 1-228.

External links

To Encyclopedia of Life

To GenBank (4 nucleotides; 1 proteins)

To World Register of Marine Species
* {{Taxonbar, from=Q5414171 danieli Gastropods described in 1862