''Finella'' 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

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 ...

Scaliolidae Scaliolidae, common name scaliolids,Strong E. E., Colgan D. J., Healy J. M., Lydeard C., Ponder W. F. & Glaubrecht M. (2011). "Phylogeny of the gastropod superfamily Cerithioidea using morphology and molecules". ''Zoological Journal of the Linnea ...

. This genus has been assigned in the course of time to different families by different authors:

Rissoidae Rissoidae is a large family of very small and minute sea snails with an operculum, marine gastropod mollusks in the superfamily Rissooidea and the order Littorinimorpha Littorinimorpha is a large order of snails, gastropods, consisting pr ...

, Cerithiidae,

Dialidae Dialidae, common name dialids, is a family of sea snails, marine gastropod molluscs in the clade Sorbeoconcha. According to the taxonomy of the Gastropoda by Bouchet & Rocroi (2005), the family Dialidae has no subfamilies. Genera Genus wit ...

Obtortionidae Obtortionidae is a family of sea snails, marine gastropod molluscs in the superfamily Cerithioidea, that is within the clade Cerithimorpha or in clade Sorbeoconcha. The shell of the larva is ornamental. 2005 taxonomy According to the taxo ...

, Finellidae and Diastomatidae Morphological and anatomical studies by

Winston Ponder Winston Frank Ponder (born 1941) is a noted malacologist born and educated in New Zealand who has named and described many marine and freshwater animals, especially micromolluscs. Education and career Ponder graduated with an MSc, PhD (1968) ...

in 1994 established that the genera ''Finella'' and ''

Scaliola ''Scaliola'' is a genus of sea snails, marine gastropod mollusks in the family Scaliolidae Scaliolidae, common name scaliolids,Strong E. E., Colgan D. J., Healy J. M., Lydeard C., Ponder W. F. & Glaubrecht M. (2011). "Phylogeny of the gastropo ...

'' didn't belong in the above-mentioned families and he brought them in a new family Scaliolidae. This was supported in 1982 by Healy through the study of the ultrastructure on the

spermatozoa A spermatozoon (; also spelled spermatozoön; ; ) is a motile sperm cell, or moving form of the haploid cell that is the male gamete. A spermatozoon joins an ovum to form a zygote. (A zygote is a single cell, with a complete set of chromosomes, ...

Description

The species in this genus contain a small, elongated, conical shell without

siphonal canal The siphonal canal is an anatomical feature of the shells of certain groups of sea snails within the clade Neogastropoda. Some sea marine gastropods have a soft tubular anterior extension of the mantle called a siphon through which water is ...

. The axial to spiral

sculpture Sculpture is the branch of the visual arts that operates in three dimensions. Sculpture is the three-dimensional art work which is physically presented in the dimensions of height, width and depth. It is one of the plastic arts. Durable sc ...

varies between weak and strong.

Distribution

The snails of this species are common to even abundant in shallow waters of the tropical Indo-West Pacific Ocean.

Species

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

Finella adamsi ''Finella adamsi'' is a species of sea snail, a marine gastropod mollusc 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 ...

'' (Dall, 1889) * '' Finella barbarensis'' (Bartsch, 1911) * '' Finella californica'' (Dall & Bartsch, 1901) * '' Finella dubia'' (d’Orbigny, 1840) * '' Finella geayi'' Lamy, 1910 * ''

Finella hamlini ''Finella'' is a genus of sea snails, marine gastropod mollusks in the family Scaliolidae. This genus has been assigned in the course of time to different families by different authors: Rissoidae, Cerithiidae, Dialidae, Obtortionidae, Finellid ...

'' (Bartsch, 1911) * ''

Finella io ''Finella'' is a genus of sea snails, marine gastropod mollusks in the family Scaliolidae. This genus has been assigned in the course of time to different families by different authors: Rissoidae, Cerithiidae, Dialidae, Obtortionidae, Finellid ...

'' (Bartsch, 1911) * ''

Finella longinqua ''Finella'' is a genus of sea snails, marine gastropod mollusks in the family Scaliolidae. This genus has been assigned in the course of time to different families by different authors: Rissoidae, Cerithiidae, Dialidae, Obtortionidae, Finellid ...

'' (Haas, 1949) * ''

Finella phanea ''Finella'' is a genus of sea snails, marine gastropod mollusks in the family Scaliolidae. This genus has been assigned in the course of time to different families by different authors: Rissoidae, Cerithiidae, Dialidae, Obtortionidae, Finellid ...

'' (Bartsch, 1911) * ''

Finella portoricana ''Finella'' is a genus of sea snails, marine gastropod mollusks in the family Scaliolidae. This genus has been assigned in the course of time to different families by different authors: Rissoidae, Cerithiidae, Dialidae, Obtortionidae, Finellid ...

'' (Dall & Simpson, 1901) * '' Finella pupoides'' Adams A., 1860 * ''

Finella tenuisculpta ''Finella'' is a genus of sea snails, marine (ocean), marine gastropod mollusks in the family (biology), family Scaliolidae. This genus has been assigned in the course of time to different families by different authors: Rissoidae, Cerithiidae, D ...

'' (Carpenter, 1864)

References

* Ponder W.F. 1994. ''The anatomy and relationships of Finella and Scaliola (Caenogastropoda: Cerithioidea: Scaliolidae)''. In: Morton B. (ed.) The malacofauna of Hong Kong and Southern China III, pp. 215–241, Hong Kong University Press * Gofas, S.; Le Renard, J.; Bouchet, P. (2001). Mollusca, in: Costello, M.J. et al. (Ed.) (2001). ''European register of marine species: a check-list of the marine species in Europe and a bibliography of guides to their identification''. Collection Patrimoines Naturels, 50: pp. 180–213 * Spencer, H.; Marshall. B. (2009). ''All Mollusca except Opisthobranchia''. In: Gordon, D. (Ed.) (2009). New Zealand Inventory of Biodiversity. Volume One: Kingdom Animalia. 584 pp

External links

* Hasegawa K. (1998). "A review of recent Japanese species previously assigned to ''Eufenella'' and ''Clathrofenella'' (Mollusca: Gastropoda: Cerithioidea)". ''Memoirs of the National Science Museum'' (Tokyo) 31: 165-186
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{{Taxonbar, from=Q3140706 Scaliolidae