Ferrissia
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| Ferrissia | ||||||||||||
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Ferrissia is a genus of gastropod in the Ancylidae family.
These animals have a pallial lung, as do all pulmonate snails, but they also have a false gill or "pseudobranch". This serves as a gill as, in their non-tidal habitat, these limpets never reach the surface for air.
It contains the following species:
- Ferrissia fragilis (= Ferrissia clessiniana, = Ferrissia wautieri)
- Hood ancylid, Ferrissia mcneili
- Ferrissia tanganyicensis
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