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AF 40002 D Ancylus fluviatilis b.jpg
A live individual of Ancylus fluviatilis, anterior end towards the left
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
(unranked): clade Heterobranchia
clade Euthyneura
clade Panpulmonata
clade Hygrophila
Superfamily: Planorboidea
Family: Planorbidae
Subfamily: Planorbinae
Tribe: Ancylini
Rafinesque, 1815[1]

See text

  • Ancylidae
  • Pseudancylinae Walker, 1923 (inv.)

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:[2][3][4][5]


  1. ^ Rafinesque C. S. (1815). Analyse de la Nature ou tableau de l'univers et des corps organisés. Palermo, 223 pp.
  2. ^ "Ancylidae". Integrated Taxonomic Information System. , accessed 1 January 2008.
  3. ^ 2000. Ancylidae. (on-line), Animal Diversity Web. Accessed December 31, 2008 at
  4. ^ "Ancylidae". UniProt. Retrieved 5 May 2014. 
  5. ^ dos Santos, S. B. (2003). "Estado atual do conhecimento dos ancilídeos na América do Sul (Mollusca: Gastropoda: Pulmonata: Basommatophora)" (PDF). Revista de Biología Tropical (in Portuguese). 51 (3): 191–223. Retrieved 29 May 2014. 
  6. ^ Gutiérrez Gregoric, D. E. (2014). "Sineancylus, Nom. Nov.: A Replacement Name for Anancylus Gutiérrez Gregoric, 2012 (Gastropoda, Ancylidae)". Malacologia. 57 (1): 243. doi:10.4002/040.057.0102. 
  7. ^ Bouchet, P. (2014). "Sineancylus Gutiérrez Gregoric, 2014". World Register of Marine Species. Retrieved 19 July 2014. 

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