''Calliotrochus'' is a

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...

sea snail 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 ...

marine Marine is an adjective meaning of or pertaining to the sea or ocean. Marine or marines may refer to: Ocean * Maritime (disambiguation) * Marine art * Marine biology * Marine debris * Marine habitats * Marine life * Marine pollution Military * ...

gastropod The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, from freshwater, and from land. T ...

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 ...

s in the subfamily

Stomatellinae Stomatellinae is a subfamily of small sea snails with a brilliantly nacreous interior of the shell, marine gastropod mollusks in the family Trochidae, the top snails.Gofas, S. (2012). Stomatellinae. Accessed through: World Register of Marine Spec ...

of the

family Family (from la, familia) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its ...

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 resembles ...

, the top snails.Bouchet, P. (2012). ''Calliotrochus'' P. Fischer, 1879. 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 specialist ...

at http://www.marinespecies.org/aphia.php?p=taxdetails&id=512277 on 2012-11-23

Description

This genus consists of thin, small, shining globose species with a turbinate shape. It has rounded, smooth or spirally striate, 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 floral ...

s. 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 opt ...

is rounded. The outer lip and columella are simple, thin and arcuate. The umbilicus is narrow.Tryon (1889), Manual of Conchology XI, Academy of Natural Sciences, Philadelphia
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Species

Species within the genus ''Calliotrochus'' include: * ''

Calliotrochus marmoreus ''Calliotrochus marmoreus'' is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.Bouchet, P. (2012). ''Calliotrochus marmoreus'' (Pease, 1861). Accessed through: World Register of Marine Species at http:/ ...

'' (Pease, 1861)
The following species were brought into synonymy: * ''Calliotrochus excellens'' Iredale, 1937: synonym of ''

'' (Pease, 1861) * ''Calliotrochus legrandi'' May, W.L. 1921: synonym of '' Minopa legrandi'' (Petterd, 1879) * ''Calliotrochus normalis'' Iredale, 1937: synonym of ''

'' (Pease, 1861) * ''Calliotrochus symbolicus'' Iredale, 1937: synonym of ''

'' (Pease, 1861) * ''Calliotrochus tasmanicus'' May, W.L. 1923: synonym of '' Nanula tasmanica'' (Petterd, 1879)

References

* Gatliff, J.H. & Gabriel, C.J., 1922. ''Additions to and alterations in the Catalogue of Victorian Marine Mollusca''. Proc. R. Soc. Vict.n.s., 34(2):128-161. * Herbert, D.G., 1998. ''Revision of the genus Calliotrochus Fischer, 1879 (Gastropoda: Trochoidea)''. Invertebrate Taxonomy, 12:545-565.

External links

{{Taxonbar, from=Q5022575 Trochidae Monotypic gastropod genera