Ancylus

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.

The genus is known throughout the Cenozoic.

Species

Species in the genus Ancylus include:

• Ancylus aduncus <small>A. A. Gould, 1847</small>
• † Ancylus alutae <small>Jekelius, 1932</small>
• Ancylus ashangiensis <small>Brown, 1965</small>
• Ancylus benoitianus <small>Bourguignat, 1862</small>
• † Ancylus bourgeoisi <small>Deshayes, 1863</small>
• † Ancylus boyeri <small>Noulet, 1867</small>
• † Ancylus braunii <small>Dunker, 1853</small>
• Ancylus capuloides <small>Jan in Porro, 1838</small>
• † Ancylus cestasensis <small>Peyrot, 1932</small>
• † Ancylus depressus <small>Deshayes, 1824</small>
• † Ancylus dumasi <small>Fontannes, 1884</small>
• † Ancylus elegans <small>J. de C. Sowerby, 1826</small>
• Ancylus expansilabris <small>Clessin, 1881</small>
• Ancylus fluviatilis <small>Müller, 1774</small> - the type species
• † Ancylus hungaricus <small>Brusina, 1902</small>
• Ancylus lapicidus <small>Hubendick, 1960</small>
• † Ancylus lyelli <small>Maillard, 1892</small>
• † Ancylus moravicus <small>Rzehak, 1893</small>
• † Ancylus ninghaiensis <small>Youluo, 1978</small>
• † Ancylus parmophorus <small>de Stefani, 1880</small>
• Ancylus pileolus
• Ancylus recurvus <small>Martens, 1873</small>
• Ancylus regularis <small>Brown, 1973</small>
• Ancylus rupicola <small>Boubée, 1832</small>
• † Ancylus saucatsensis <small>Peyrot, 1932</small> (?)
• Ancylus scalariformis <small>Stankovic & Radoman, 1953</small>
• † Ancylus serbicus <small>Brusina, 1893</small>
• Ancylus striatus <small>Quoy & Gaimard, 1834</small>
• Ancylus subcircularis <small>Clessin, 1880</small>
• † Ancylus subcostatus <small>Benoist, 1873</small>
• Ancylus tapirulus <small>Polinski, 1929</small>

• † Ancylus croaticus <small>Brusina, 1902</small>: synonym of † Acroloxus croaticus <small>(Brusina, 1902)</small>
• † Ancylus decussatus <small>Reuss in Reuss & Meyer, 1849</small>: synonym of †Acroloxus decussatus (<small>Reuss in Reuss & Meyer, 1849)</small>
• † Ancylus deperditolacustris <small>Gottschick, 1911</small>: synonym of † Acroloxus deperditolacustris <small>(Gottschick, 1911)</small>
• † Ancylus deperditus <small>(Desmarest, 1814)</small>: synonym of † Ferrissia deperdita <small>(Desmarest, 1814)</small>
• Ancylus drouetianus <small>Bourguignat, 1862</small>: synonym of Williamia gussoni <small>(Costa O. G., 1829)</small>
• Ancylus fuscus <small>C. B. Adams, 1840</small>: synonym of Laevapex fuscus <small>(C. B. Adams, 1840)</small>
• Ancylus gibbosus <small>Bourguignat, 1862</small>: synonym of Williamia gussoni <small>(Costa O. G., 1829)</small>
• Ancylus gussonii <small>O. G. Costa, 1829</small>: synonym of Williamia gussonii <small>(O. G. Costa, 1829)</small>
• † Ancylus illyricus <small>Neumayr, 1880</small>: synonym of †Ferrissia illyrica <small>(Neumayr, 1880)</small>
• † Ancylus involutus <small>Pavlović, 1903</small>: synonym of † Acroloxus involutus <small>(Pavlović, 1903)</small>
• † Ancylus michaudi <small>Locard, 1878</small>: synonym of † Acroloxus michaudi <small>(Locard, 1878)</small>
• † Ancylus neumayri <small>Fontannes, 1881</small>: synonym of †Ferrissia neumayri <small>(Fontannes, 1881)</small>
• Ancylus patelloides <small>I. Lea, 1856</small>: synonym of Lanx patelloides <small>(I. Lea, 1856)</small>
• † Ancylus pontileviensis <small>Morgan, 1920</small>: synonym of † Ferrissia pontileviensis (<small>Morgan, 1920)</small>
• † Ancylus wittmanni <small>Schlickum, 1964</small>: synonym of † Ferrissia wittmanni <small>(Schlickum, 1964)</small>

Cladogram

A cladogram based on sequences of mitochondrial 16S ribosomal RNA and cytochrome-c oxidase I (COI) genes showing phylogenic relations of Ancylus by Albrecht et al. (2006):

References

Further reading

• 2000. Ancylidae (On-line), Animal Diversity Web. http://animaldiversity.ummz.umich.edu/site/accounts/information/Ancylidae.html