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Laevapex

Genus of gastropods From Wikipedia, the free encyclopedia

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Laevapex is a genus of small, freshwater, air-breathing limpets, aquatic pulmonate gastropod molluscs in the family Planorbidae, the ram's horn snails and their allies.[2]

Quick Facts Scientific classification, Type species ...
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Geographic distribution

The genus has a New World distribution. It is widespread throughout the eastern United States, occurring in lakes and slow-flowing rivers.[3]

Anatomy

These animals have a pallial lung, as do all pulmonate snails, but they also have a false gill or "pseudobranch" which can serve perfectly well as a gill when they are unable to reach the surface for air.[3]

Members of this genus are characterised by their smooth apex.[3]

Species

Species within the genus Laevapex include:[1][2][4]

Walther (2008) considers North American Laevapex monotypic, collectively synonymising L. diaphanus, L. peninsulae and unidentified Laevapex sp. with L. fuscus, the type species.[3]

References

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