1) Genus ancylus 2) Mollusk genus 
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 in the genus Ancylus include: Synonyms: == Cladogram == A cladogram based on sequences o....
[n] - type genus of the family Ancylidae: river limpet
genus Ancylus noun type genus of the family Ancylidae: river limpet