plural of ramshorn

(fortifications) A low semicircular work situated in and commanding a ditch. / An ammonite; a fossil cephalopod. / A ramshorn snail

plural of great ramshorn

Planorbarius corneus, a freshwater air-breathing snail

plural of ramshorn snail

Any member of the Planorbidae, a family of freshwater pulmonate molluscs whose shells are shaped like a ram's horn.