- Animals
- ›Molluscs
- ›Gastropods
- ›Heterobranchs
- ›Euthyneura
- ›Tectipleura
- ›Hygrophila
- ›Pond Snails, Bladder Snails, and Allies
- ›Ramshorn Snails and Allies
- ›Ramshorn Snails
- ›Helisomatini
- ›Helisoma

Two-ridged Ramshorn
Helisoma anceps
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.
From the article Helisoma anceps on Wikipedia (CC BY-SA), quoted section by section
Range & habitat
This species is distributed from Mexico, through the Central United States, to central Canada. It was introduced to Europe.
Wikipedia: “Distribution”
Where it lives
Recorded sightings
—
geo-referenced records in GBIF, from museums, herbaria and field observers.
Drag the globe to turn it. Dots are where records exist, not a range map; darker means more records.
In the stacks
Searching the stacks…
Every page naming Helisoma anceps in the Biodiversity Heritage Library →
This page is assembled live from iNaturalist, GBIF, Wikipedia, the Source Library and the Internet Archive. It is not yet part of the hand-edited codex. iNaturalist taxon 194064.