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Rhodacmea
Two views of a shell of Rhodacmea filosa
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Superorder:	Hygrophila
Family:	Planorbidae
Genus:	Rhodacmea Walker, 1917
Diversity
3 species

Rhodacmea is a genus of small freshwater snails or limpets, aquatic gastropod mollusks in the family Planorbidae, the ram's horn snails and their allies.

Rhodacmea is the type genus of the subfamily Rhodacmeinae.

Anatomy

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, which is necessary as, in their non-tidal habitat, these limpets never reach the surface for air.

Species

Species in the genus Rhodacmea include:

• Rhodacmea elatior (Anthony, 1855) – domed ancylid
• Rhodacmea filosa (Conrad, 1834) – wicker ancylid, type species
• Rhodacmea hinkleyi (Walker, 1908)

References

1. ^ Walker B. (1917). "A revision of the classification of the North American patelliform Ancylidae with descriptions of new species". The Nautilus 31(1): 1-10. page 5. plate 1-plate 3.
2. ^ Ó Foighil D., Li J., Lee T., Johnson P., Evans R. & Burch J. B. (2011). "Conservation Genetics of a Critically Endangered Limpet Genus and Rediscovery of an Extinct Species". PLoS ONE 6(5): e20496. doi:10.1371/journal.pone.0020496.
3. Bouchet, Philippe; Rocroi, Jean-Pierre; Frýda, Jiri; Hausdorf, Bernard; Ponder, Winston; Valdés, Ángel & Warén, Anders (2005). "Classification and nomenclator of gastropod families". Malacologia. 47 (1–2). Hackenheim, Germany: ConchBooks: 1–397. ISBN 3-925919-72-4. ISSN 0076-2997.
4. Bogan, A.E. (1996). "Rhodacmea elatior". IUCN Red List of Threatened Species. 1996: e.T19669A9002012. doi:10.2305/IUCN.UK.1996.RLTS.T19669A9002012.en.
5. Cordeiro, J. (2012). "Rhodacmea filosa". IUCN Red List of Threatened Species. 2012: e.T19670A2475285. doi:10.2305/IUCN.UK.2012-1.RLTS.T19670A2475285.en.

• Planorbidae
• Gastropod genera