| Ancylus, Ferrissia, Ancylus fluviatilis, Wicker ancylid, Rhodacmea|
Ancylini is a tribe of small, freshwater, air-breathing limpets, aquatic pulmonate gastropod mollusks in the family Planorbidae, the ram's horn snails and their allies. This tribe used to be treated as a family; the current taxonomic placement within Planorbidae is according to the taxonomy of the Gastropoda (Bouchet & Rocroi, 2005).
These animals have a pallial lung, as do all pulmonate snails, but they also have a false gill or "pseudobranch" which can serve perfectly well as a gill in situations where the limpet is unable to reach the surface for air, as is often the case.
Genera in the tribe Ancylini include:Ancylus Müller, 1773 - type genus
Ferrissia Walker, 1903
Rhodacmea Walker, 1917
Sineancylus Gutiérrez Gregoric, 2014
Anisancylus Pilsbry & Vanatta, 1924
Burnupia Walker, 1912
Gundlachia Pfeiffer, 1849
Hebetancylus Pilsbry, 1914
Laevapex Walker, 1903
Uncancylus Pilsbry, 1913