''Discus'' is a

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial nom ...

of small air-breathing land snails,

terrestrial Terrestrial refers to things related to land or the planet Earth. Terrestrial may also refer to: * Terrestrial animal, an animal that lives on land opposed to living in water, or sometimes an animal that lives on or near the ground, as opposed to ...

pulmonate gastropod mollusks in the family

Discidae Discidae is a taxonomic family of small air-breathing land snails, terrestrial gastropod mollusks in the superfamily Punctoidea. Genera The family Discidae has no subfamilies. Genera within the family Discidae include: * ''Anguispira'' Morse, ...

, the disk snails.

Distribution

Distribution of the genus ''Discus'' include Europe, northern Asia and North America."Genus summary for ''Discus''"

AnimalBase AnimalBase is a project brought to life in 2004 and is maintained by the University of Göttingen, Germany. The goal of the AnimalBase project is to digitize early zoological literature, provide copyright-free open access to zoological works, and pr ...

, last modified 15 january 2009, accessed 13 January 2011.

Description

Discus species have small or medium shells with ribs. The umbilicus is wide.

Species

Species in this genus include: subgenus ''Discus'' Fitzinger, 1833 * '' Discus ruderatus'' Férussac, 1821 – type species"Species in genus ''Discus''
(n=3). AnimalBase, accessed 13 January 2011. subgenus '' Gonyodiscus'' Fitzinger, 1833 * '' Discus perspectivus'' J. C. M. von Mühlfeld, 1816 * ''

Discus rotundatus ''Discus rotundatus'', common name rotund disc, is a species of small, air-breathing, land snail, a terrestrial pulmonate gastropod mollusk in the family Discidae, the disk snails. Description The shells of ''Discus rotundatus'' in the adult ...

'' ( O. F. Müller, 1774) – rotund disc subgenus ? * '' Discus brunsoni'' Berry, 1955 – Lake Disc"''Discus'' Fitzinger, 1833"
accessed 13 January 2011. * '' Discus bryanti'' (Harper, 1881) – saw-tooth disc, sawtooth disc * '' Discus catskillensis'' (Pilsbry, 1896) – angular disc * '' Discus clappi'' (Pilsbry, 1924) – channelled disc * '' Discus engonatus'' Shuttleworth, 1852 – extinctFontaine B., Bouchet P., Van Achterberg K., Alonso-Zarazaga M. A., Araujo R. et al. (2007). "The European union’s 2010 target: Putting rare species in focus." ''Biological Conservation'' 139: 167–185. Table 2 on p. 173.
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* '' Discus ganodus'' Mabille, 1882 * '' Discus gomerensis'' Rähle, 1994 * '' Discus guerinianus'' R. T. Lowe, 1852 * '' Discus kompsus'' J. Mabille, 1883 * '' Discus macclintocki'' F. C. Baker, 1928 – Iowa pleistocene snail, Pleistocene disc * '' Discus marmorensis'' H. B. Baker, 1932 – Marbled Disc * '' Discus nigrimontanus'' Pilsbry, 1924 – Black Mountain disc * '' Discus patulus'' ( G. P. Deshayes, 1830) – domed disc * '' Discus putrescens'' ( R. T. Lowe, 1861) * '' Discus retextus'' Shuttleworth, 1852 * '' Discus scutula'' Shuttleworth, 1852 * '' Discus selenitoides'' (Pilsbry, 1890) – file disc * '' Discus shimekii'' (Pilsbry, 1890) – Striate Disc * '' Discus textilis'' Shuttleworth, 1852 – extinct * '' Discus whitneyi'' (Newcomb, 1864) – Forest Disc

References

External links

{{Taxonbar, from=Q148704 Discidae Taxa named by Leopold Fitzinger Gastropod genera