#genus_Ancylus__Ancylus  type genus of the family Ancylidae: river limpet
  supertype:  mollusk_genus__molluskgenu  a genus of mollusks
  member of:  family_Ancylidae
  member:  river_limpet__riverlimpet__freshwater_limpet__Ancylus_fluviatilis  minute conical gastropod superficially resembling a limpet but living and feeding on freshwater plants

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