Helisoma anceps,[2] common name the two-ridge rams-horn, is a species of air-breathing freshwater snail, a pulmonate gastropod mollusk in the family Planorbidae, the ram's horn snails.[3]
This species is distributed from Mexico, through the Central United States, to central Canada.[2]
It was introduced to Europe.[2]
Helisoma anceps, common name the two-ridge rams-horn, is a species of air-breathing freshwater snail, a pulmonate gastropod mollusk in the family Planorbidae, the ram's horn snails.
