''Ancylus'' 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 ...

of very small, freshwater, air-breathing limpets. They are aquatic

pulmonate Pulmonata or pulmonates is an informal group (previously an order, and before that, a subclass) of snails and slugs characterized by the ability to breathe air, by virtue of having a pallial lung instead of a gill, or gills. The group inclu ...

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 tribe Ancylini within the family

Planorbidae Planorbidae, common name the ramshorn snails or ram's horn snails, is a family (biology), family of air-breathing freshwater snails, Aquatic animal, aquatic pulmonate gastropod Mollusca, molluscs. Unlike most molluscs, the blood of ram's horn sn ...

, the ram's horn snails and their allies.Bouchet, P.; Rosenberg, G. (2014). Ancylus O. F. Müller, 1773. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=559196 on 2014-11-15 The genus is known throughout the

Cenozoic The Cenozoic Era ( ; ) is Earth's current geological era, representing the last 66million years of Earth's history. It is characterized by the dominance of mammals, insects, birds and angiosperms (flowering plants). It is the latest of three g ...

Species

Species in the genus ''Ancylus'' include: * '' Ancylus aduncus'' A. A. Gould, 1847"Species in genus ''Ancylus'' (n=6)"
AnimalBase, accessed 7 July 2012. * † ''

Ancylus alutae ''Ancylus'' is a genus of very small, freshwater, air-breathing limpets. They are aquatic animal, aquatic pulmonate gastropod mollusks in the tribe Ancylini within the family Planorbidae, the ram's horn snails and their allies.Bouchet, P.; Rose ...

'' Jekelius, 1932 * '' Ancylus ashangiensis'' Brown, 1965 * '' Ancylus benoitianus'' Bourguignat, 1862 * † '' Ancylus bourgeoisi'' Deshayes, 1863 * † ''

Ancylus boyeri ''Ancylus'' is a genus of very small, freshwater, air-breathing limpets. They are aquatic pulmonate gastropod mollusks in the tribe Ancylini within the family Planorbidae, the ram's horn snails and their allies.Bouchet, P.; Rosenberg, G. (20 ...

'' Noulet, 1867 * † '' Ancylus braunii'' Dunker, 1853 * '' Ancylus capuloides'' Jan in Porro, 1838 * † '' Ancylus cestasensis'' Peyrot, 1932 * † '' Ancylus depressus'' Deshayes, 1824 * † '' Ancylus dumasi'' Fontannes, 1884 * † '' Ancylus elegans'' J. de C. Sowerby, 1826 * '' Ancylus expansilabris'' Clessin, 1881 * '' Ancylus fluviatilis'' Müller, 1774 - the

type species In International_Code_of_Zoological_Nomenclature, zoological nomenclature, a type species (''species typica'') is the species name with which the name of a genus or subgenus is considered to be permanently taxonomically associated, i.e., the spe ...

* † ''

Ancylus hungaricus ''Ancylus'' is a genus of very small, freshwater, air-breathing limpets. They are aquatic pulmonate gastropod mollusks in the tribe Ancylini within the family Planorbidae, the ram's horn snails and their allies.Bouchet, P.; Rosenberg, G. (20 ...

'' Brusina, 1902 * ''

Ancylus lapicidus ''Ancylus'' is a genus of very small, freshwater, air-breathing limpets. They are aquatic pulmonate gastropod mollusks in the tribe Ancylini within the family Planorbidae, the ram's horn snails and their allies.Bouchet, P.; Rosenberg, G. (20 ...

'' Hubendick, 1960 * † ''

Ancylus lyelli ''Ancylus'' is a genus of very small, freshwater, air-breathing limpets. They are aquatic pulmonate gastropod mollusks in the tribe Ancylini within the family Planorbidae, the ram's horn snails and their allies.Bouchet, P.; Rosenberg, G. (20 ...

'' Maillard, 1892 * † ''

Ancylus moravicus ''Ancylus'' is a genus of very small, freshwater, air-breathing limpets. They are aquatic pulmonate gastropod mollusks in the tribe Ancylini within the family Planorbidae, the ram's horn snails and their allies.Bouchet, P.; Rosenberg, G. (20 ...

'' Rzehak, 1893 * † ''

Ancylus ninghaiensis ''Ancylus'' is a genus of very small, freshwater, air-breathing limpets. They are aquatic pulmonate gastropod mollusks in the tribe Ancylini within the family Planorbidae, the ram's horn snails and their allies.Bouchet, P.; Rosenberg, G. (20 ...

'' Youluo, 1978 * † ''

Ancylus parmophorus ''Ancylus'' is a genus of very small, freshwater, air-breathing limpets. They are aquatic pulmonate gastropod mollusks in the tribe Ancylini within the family Planorbidae, the ram's horn snails and their allies.Bouchet, P.; Rosenberg, G. (20 ...

'' de Stefani, 1880 * '' Ancylus pileolus'' * '' Ancylus recurvus'' Martens, 1873 * '' Ancylus regularis'' Brown, 1973 * '' Ancylus rupicola'' Boubée, 1832 * † '' Ancylus saucatsensis'' Peyrot, 1932 (?) * '' Ancylus scalariformis'' Stankovic & Radoman, 1953 * † '' Ancylus serbicus'' Brusina, 1893 * '' Ancylus striatus'' Quoy &

Gaimard Joseph Paul Gaimard (31 January 1793 – 10 December 1858) was a French naval surgeon and naturalist. Biography Gaimard was born at Saint-Zacharie on January 31, 1793. He studied medicine at the naval medical school in Toulon, subsequent ...

, 1834 * '' Ancylus subcircularis'' Clessin, 1880 * † '' Ancylus subcostatus'' Benoist, 1873 * '' Ancylus tapirulus'' Polinski, 1929 ;Synonyms: * † ''Ancylus croaticus'' Brusina, 1902: synonym of † '' Acroloxus croaticus'' (Brusina, 1902) * † ''Ancylus decussatus'' Reuss in Reuss & Meyer, 1849: synonym of †'' Acroloxus decussatus'' (Reuss in Reuss & Meyer, 1849) * † ''Ancylus deperditolacustris'' Gottschick, 1911: synonym of † '' Acroloxus deperditolacustris'' (Gottschick, 1911) * † ''Ancylus deperditus'' (Desmarest, 1814): synonym of † '' Ferrissia deperdita'' (Desmarest, 1814) * ''Ancylus drouetianus'' Bourguignat, 1862: synonym of '' Williamia gussoni'' (Costa O. G., 1829) * ''Ancylus fuscus'' C. B. Adams, 1840: synonym of '' Laevapex fuscus'' (C. B. Adams, 1840) * ''Ancylus gibbosus'' Bourguignat, 1862: synonym of '' Williamia gussoni'' (Costa O. G., 1829) * ''Ancylus gussonii'' O. G. Costa, 1829: synonym of '' Williamia gussonii'' (O. G. Costa, 1829) * † ''Ancylus illyricus'' Neumayr, 1880: synonym of †'' Ferrissia illyrica'' (Neumayr, 1880) * † ''Ancylus involutus'' Pavlović, 1903: synonym of † '' Acroloxus involutus'' (Pavlović, 1903) * † ''Ancylus michaudi'' Locard, 1878: synonym of † '' Acroloxus michaudi'' (Locard, 1878) * † ''Ancylus neumayri'' Fontannes, 1881: synonym of †'' Ferrissia neumayri'' (Fontannes, 1881) * ''Ancylus patelloides'' I. Lea, 1856: synonym of '' Lanx patelloides'' (I. Lea, 1856) * † ''Ancylus pontileviensis'' Morgan, 1920: synonym of † '' Ferrissia pontileviensis'' (Morgan, 1920) * † ''Ancylus wittmanni'' Schlickum, 1964: synonym of † '' Ferrissia wittmanni'' (Schlickum, 1964)

Cladogram

A cladogram based on sequences of mitochondrial

16S ribosomal RNA 16S ribosomal RNA (or 16 S rRNA) is the RNA component of the 30S subunit of a prokaryotic ribosome ( SSU rRNA). It binds to the Shine-Dalgarno sequence and provides most of the SSU structure. The genes coding for it are referred to as 16S ...

and cytochrome-c oxidase I (COI) genes showing phylogenic relations of ''Ancylus'' by Albrecht et al. (2006):Albrecht C., Trajanovski S., Kuhn K., Streit B. & Wilke T. (2006). "Rapid evolution of an ancient lake species flock: Freshwater limpets (Gastropoda: Ancylidae) in the Balkan Lake Ohrid". '' Organisms Diversity & Evolution'' 6(4): 294-307. .

Species

Cladogram

References

Further reading