''Turcica'' is a

genus Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...

sea snail Sea snails are slow-moving marine (ocean), marine gastropod Mollusca, molluscs, usually with visible external shells, such as whelk or abalone. They share the Taxonomic classification, taxonomic class Gastropoda with slugs, which are distinguishe ...

s, marine

gastropod Gastropods (), commonly known as slugs and snails, belong to a large Taxonomy (biology), taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, freshwater, and fro ...

mollusk Mollusca is a phylum of protostomic invertebrate animals, whose members are known as molluscs or mollusks (). Around 76,000 extant species of molluscs are recognized, making it the second-largest animal phylum after Arthropoda. The ...

s in the

family Family (from ) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). It forms the basis for social order. Ideally, families offer predictabili ...

Eucyclidae Eucyclidae is a family of gastropods in the superfamily Seguenzioidea (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005). This family has no subfamilies. Genera Genera within the family Eucyclidae include: * '' Amberley ...

. Kano et al. (2009) have argued that ''Turcica'' belongs in the family

Calliotropidae Seguenzioidea is a superfamily of sea snails, marine gastropod mollusks in the clade Vetigastropoda.Gofas, S. (2010). Seguenzioidea. In: Bouchet, P.; Gofas, S.; Rosenberg, G. (2010) World Marine Mollusca database. Accessed through: World Registe ...

Description

The thin, subdiaphanous, imperforate shell has a conoidal shape. The

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). In nature File:Photograph and axial plane floral diagra ...

s display transverse series of granules, the last rounded on the periphery. The thick

columella Lucius Junius Moderatus Columella (, Arabic: ) was a prominent Roman writer on agriculture in the Roman Empire. His in twelve volumes has been completely preserved and forms an important source on Roman agriculture and ancient Roman cuisin ...

is spirally twisted posteriorly, ending anteriorly in an obtuse, prominent point. The thin outer

lip The lips are a horizontal pair of soft appendages attached to the jaws and are the most visible part of the mouth of many animals, including humans. Mammal lips are soft, movable and serve to facilitate the ingestion of food (e.g. sucklin ...

is simple and acute.

Distribution

The genus ranges on both shores of the Pacific, from California and Australia northward.

Species

According to the

World Register of Marine Species The World Register of Marine Species (WoRMS) is a taxonomic database that aims to provide an authoritative and comprehensive catalogue and list of names of marine organisms. Content The content of the registry is edited and maintained by scien ...

(WoRMS) the following species are included within the genus ''Turcica'' : * ''

Turcica admirabilis ''Turcica admirabilis'' is a species of sea snail, a marine gastropod mollusc in the family Eucyclidae.Keen M. (1971) Sea shells of tropical West America. Marine mollusks from Baja California to Perú, ed. 2. Stanford University Press. 1064 pp. ...

'' Berry, 1969 * ''

Turcica caffea ''Turcica caffea'', common name the two tooth top shell, is a species of sea snail, a marine gastropod mollusk in the family Eucyclidae Eucyclidae is a family of gastropods in the superfamily Seguenzioidea (according to the taxonomy of the ...

'' (Gabb, 1865) * ''

Turcica imperialis ''Turcica imperialis'' is a species of sea snail, a marine gastropod mollusk in the family Eucyclidae. Description The solid, conoidal shell has an acuminate spire. The base is obliquely produced. Its color is tawny-red variegated, ornamented b ...

'' A. Adams, 1854 * ''

Turcica monilifera ''Turcica monilifera'' is a species of sea snail, a marine gastropod mollusk in the family Eucyclidae. Description The size of the shell varies between 10 mm and 30 mm. The thin shell is conoidal, subdiaphanous and imperforate. Its co ...

'' A. Adams, 1854 ;Species brought into synonymy: * ''Turcica (Perrinia)'' Adams, 1854: synonym of ''

Perrinia ''Perrinia'' is a genus of sea snails, marine (ocean), marine gastropod mollusks in the family (biology), family Chilodontaidae. This genus has a long time been regarded as a subgenus of ''Turcica'' H. & A. Adams, 1854. Previously it was conside ...

'' H. Adams & A. Adams, 1854 * ''Turcica coreensis'' Pease, 1860: synonym of ''

'' A. Adams, 1854 * ''Turcica helix'' Barnard, 1964: synonym of '' Herpetopoma helix'' (Barnard, 1964) * ''Turcica instricta'' A. Adams 1864: synonym of ''

Herpetopoma instrictum ''Herpetopoma instrictum'', common name the basket-like false top shell, is a species of sea snail, a marine gastropod mollusc in the family Chilodontaidae.Bouchet, P. (2012). ''Herpetopoma instrictum'' (Gould, 1849). Retrieved through: World Re ...

'' (Gould, 1849) * ''Turcica konos'' Barnard, 1964: synonym of ''

Perrinia konos ''Perrinia konos'' is a species of sea snail, a marine gastropod mollusc in the family Chilodontaidae.Bouchet, P. (2012). ''Perrinia konos'' (Barnard, 1964). Retrieved through: World Register of Marine Species at http://www.marinespecies.org/ap ...

'' (Barnard, 1964) * ''Turcica salpinx'' Barnard, 1964: synonym of ''

Clypeostoma salpinx ''Clypeostoma salpinx'' is a species of sea snail, a marine gastropod mollusc in the family Chilodontaidae.Bouchet, P. (2012). ''Clypeostoma salpinx'' (Barnard, 1964). Retrieved through: World Register of Marine Species at http://www.marinespec ...

'' (Barnard, 1964) * ''Turcica stellata'' A. Adams, 1864: synonym of ''

Perrinia stellata ''Perrinia stellata'' is a species of sea snail, a marine gastropod mollusc in the family Chilodontaidae . Description The shell size varies between 9 mm to 17 mm Distribution This species is distributed in the Red Sea The Re ...

'' (A. Adams, 1864) * † ''Turcica (Perrinia) waiwailevensis'' Ladd, 1982: synonym of ''

Herpetopoma xeniolum ''Herpetopoma xeniolum'' is a species of sea snail, a marine gastropod mollusc in the family Chilodontaidae. D.G. Herbert (2012) wasn't convinced that this poorly known species belonged in the genus ''Herpetopoma'' and puts it in ''Herpetopoma ...

'' (Melvill, 1918)

References

{{Taxonbar, from=Q3140741 Eucyclidae Gastropod genera