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Noun1.Ancylidae - freshwater gastropodAncylidae - freshwater gastropod      
mollusk family - a family of mollusks
class Gasteropoda, class Gastropoda, Gasteropoda, Gastropoda - snails and slugs and their relatives
Ancylus, genus Ancylus - type genus of the family Ancylidae: river limpet
References in periodicals archive ?
Belonging to the family Ancylidae, Laevapex is a genus of these tiny snails that may be found throughout the eastern United States and is second only to Ferrissia in the extent of its range.
Molluscs included Bivalvia (Sphaeriidae, Corbiculidae), and Gastropoda (Pleuroceridae, Hydrobiidae, Planorbidae, Ancylidae, Physidae).