Most observed native Helisomatini
Native to the US, by how plants support them, most observed first.
Other species All
13 native species with no plant ties on record, most observed first.
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Marsh Ramshorn
Planorbella trivolvis
8,381 observations
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Bellmouth Ramshorn
Planorbella campanulata
1,375 observations
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Two-ridged Ramshorn
Helisoma anceps
443 observations
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Thicklip Ramshorn
Planorbula armigera
107 observations
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Sharp Sprite
Promenetus exacuous
56 observations
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Mesa Ramshorn
Planorbella scalaris
47 observations
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Trumpet Ram's-horn
Menetus dilatatus
47 observations
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Great Basin Ramshorn
Helisoma newberryi
46 observations