# Athearnia

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***Athearnia*** is a [genus](/source/Genus) of [freshwater](/source/Freshwater) [snails](/source/Snail) with a [gill](/source/Gill) and an [operculum](/source/Operculum_(gastropod)), aquatic [gastropod](/source/Gastropod) [mollusks](/source/Mollusk) in the family [Pleuroceridae](/source/Pleuroceridae).[1]

## Species

Species within the genus *Athearnia* include:

- *[Athearnia anthonyi](/source/Athearnia_anthonyi)* (Redfield, 1854)
- *[Athearnia crassa](/source/Athearnia_crassa)* (Haldeman, 1842), the [boulder snail](/source/Boulder_snail)

## References

1. MolluscaBase eds. (2025). MolluscaBase. Athearnia J. P. E. Morrison, 1971. Accessed through: World Register of Marine Species at: [https://www.marinespecies.org/aphia.php?p=taxdetails&id=1057387](https://www.marinespecies.org/aphia.php?p=taxdetails&id=1057387) on 2025-12-23

## External links

- Morrison, J.P.E. (1971). ["Athearnia, new name for a genus of pleurocerid snails."](https://www.biodiversitylibrary.org/page/8516759). *The Nautilus*. **84** (3). Retrieved 23 December 2025.
- Burch, J.B. (1989). ["North American freshwater snails."](https://molluskconservation.org/PUBLICATIONS/WALKERANA/Vol2/walkerana%20vol2%20no6%201-80.PDF). *Walkerana*. **2** (6): 11.
- Zipcode zoo info at: [\[1\]](https://web.archive.org/web/20120612112752/http://zipcodezoo.com/Animals/A/Athearnia_crassa/)

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Adapted from the Wikipedia article [Athearnia](https://en.wikipedia.org/wiki/Athearnia) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Athearnia?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.