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Marsh Ramshorn
Planorbella trivolvis
Planorbella trivolvis is a species of freshwater air-breathing snail, an aquatic pulmonate gastropod mollusk in the family Planorbidae, the ram's horn snails, or planorbids, which all have sinistral or left-coiling shells.
From the article Planorbella trivolvis on Wikipedia (CC BY-SA), quoted section by section
Description
All species within family Planorbidae have sinistral shells. The width of the shell of this species is up to 18 mm.
Range & habitat
This pond snail is native to North America, from the Arctic areas of Canada all the way south to Florida. It has also been introduced in other parts of the world. Recent genetic analysis of western U.S. populations of Planorbella trivolvis found that most genetic variation occurs within and among local populations rather than between watersheds, and that geographic distance did not predict genetic distance — a pattern attributed to long-distance dispersal by migratory waterfowl.
Peru Dominica
Wikipedia: “Distribution”
Where it lives
Recorded sightings
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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 Planorbella trivolvis 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 150985.