Top Qs
Timeline
Chat
Perspective
Laevapex
Genus of gastropods From Wikipedia, the free encyclopedia
Remove ads
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]
Remove ads
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]
- Laevapex diaphanus Haldeman, 1841
- Laevapex fuscus C. B. Adams, 1841
- Laevapex peninsulae Pilsbry, 1903
- Laevapex vazi Santos, 1989
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
External links
Wikiwand - on
Seamless Wikipedia browsing. On steroids.
Remove ads