Planorbis
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Planorbis Temporal range: Jurassic–recent |
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| Drawing of a shell of Planorbis planorbis | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| (unranked): | clade Heterobranchia clade Euthyneura clade Panpulmonata clade Hygrophila |
| Superfamily: | Planorboidea |
| Family: | Planorbidae |
| Subfamily: | Planorbinae |
| Tribe: | Planorbini |
| Genus: |
Planorbis O. F. Müller, 1774 |
| Species | |
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See text. |
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| Synonyms | |
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Tropidiscus Stein, 1850 |
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See text.
Tropidiscus Stein, 1850
Planorbis is a genus of air-breathing freshwater snails, aquatic pulmonate gastropod mollusks in the family Planorbidae, the ram's horn snails, or planorbids. All species in this genus have sinistral or left-coiling shells.
Planorbis shells are flat-coiled and sinistral.
This genus has a worldwide distribution. It is known from the Jurassic to the Recent periods.
Species within the genus Planorbis include:
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