{{Short description|Family of gastropods}} {{Automatic taxobox | taxon = Acroloxidae | image = Acroloxus lacustris A MRKVICKA.JPG | image_caption = A left side view of a live ''Acroloxus lacustris'' | image2 = Acroloxus lacustris.jpg | image2_caption = Two views of a shell of ''Acroloxus lacustris'' | authority = Thiele, 1931 | diversity_ref = <ref name="Strong 2008">Strong E. E., Gargominy O., Ponder W. F. & Bouchet P. (2008). "Global Diversity of Gastropods (Gastropoda; Mollusca) in Freshwater". ''Hydrobiologia'' 595: 149-166. {{hdl|10088/7390}} {{doi|10.1007/s10750-007-9012-6}}.</ref> | diversity = About 40 freshwater species }}
'''Acroloxidae''', commonly known as '''river limpets''', are a taxonomic family of very small, freshwater snails, aquatic pulmonate gastropod limpet-like mollusks with a simple flattened conical shell in the clade Hygrophila.
Acroloxidae is the only family within the superfamily '''Acroloxoidea''' (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005).
== Distribution == Worldwide.<ref name="AB">[http://www.animalbase.uni-goettingen.de/zooweb/servlet/AnimalBase/home/family?id=21 "Family summary for Acroloxidae"]. AnimalBase, last change 14-08-2006, accessed 3 August 2010</ref>
== Anatomy == Pulmones are reduced. Sexual cavity and accessory gills are on the right side.<ref name="AB"/>
==Genera== Genera within the family Acroloxidae include: * ''Acroloxus'' <small>Beck, 1838</small><ref>Beck H. (1837). ''Index molluscorum præsentis ævi musei principis augustissimi Christiani Frederici''. pp. 1-100 [1837], 101-124 [1838]. Hafniae.</ref> - type genus<ref name="Kantor 2009"/> * ''Baicalancylus'' <small>Starobogatov, 1967</small><ref name="Kantor 2009">Kantor Yu I., Vinarski M. V., Schileyko A. A. & Sysoev A. V.(published online on December 22, 2009). "CATALOGUE OF THE CONTINENTAL MOLLUSKS OF RUSSIA AND ADJACENT TERRITORIES". [http://www.ruthenica.com/documents/Continental_Russian_molluscs_ver2-3.pdf Version 2.3.]</ref> * ''Frolikhiancylus'' <small>Sitnikova & Starobogatov, 1993</small> * ''Gerstfeldtiancylus'' <small>Starobogatov, 1989</small><ref name="Kantor 2009"/><ref>Starobogatov (1989). In: Linevich (Ed.) ''Fauna Baikala. Chast' 4 - Chervi, mollyuski, chlenistonogie: sbornik nauchnykh trudov. Fauna of Lake Baikal. Part 4 - worms, molluscs and arthropods: collected scientific papers.'' Nauka, Novosibirsk: 58.</ref> * ''Pseudancylastrum'' <small>Lindholm, 1909</small><ref name="Kantor 2009"/><ref>Lindholm (1909). ''Wiss. Ergeb. Exped. Baikal'' '''4''': 26.</ref>
;Synonyms: * ''Costovelletia'' <small>Starobogatov, 1991</small>: synonym of ''Acroloxus'' <small>H. Beck, 1838</small> (a junior synonym) * ''Dinarancylus'' <small>Starobogatov, 1991</small>: synonym of ''Acroloxus'' <small>H. Beck, 1838</small> (a junior synonym) * ''Velletia'' <small>J. E. Gray, 1840</small>: synonym of ''Acroloxus'' <small>H. Beck, 1838</small> (junior objective synonym)
==References== {{Commons category}} This article incorporates public domain text from the reference.<ref name="AB"/> {{Reflist}} * Thiele, J. (1929–1935). Handbuch der systematischen Weichtierkunde. Jena, Gustav Fischer, 1154 pp.
==External links== * [https://www.biodiversitylibrary.org/page/25127200 Bouchet, P. & Rocroi, J.-P. (2005). Classification and nomenclator of gastropod families. Malacologia. 47 (1-2): 1-397.]
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Category:Acroloxidae Category:Taxa named by Johannes Thiele (zoologist)