Henderson, J. B. & Bartsch, P. (1920). A classification of the American operculate land mollusks of the family Annulariidae. <em>Proceedings of the United States National Museum.</em> 58(2327): 49-82., available online athttps://www.biodiversitylibrary.org/page/7290135 page(s): 67 [details]
MolluscaBase eds. (2024). MolluscaBase. Opisthosiphon (Opisthosiphona) J. B. Henderson & Bartsch, 1920. Accessed at: https://molluscabase.org/aphia.php?p=taxdetails&id=997550 on 2024-03-29
original descriptionHenderson, J. B. & Bartsch, P. (1920). A classification of the American operculate land mollusks of the family Annulariidae. <em>Proceedings of the United States National Museum.</em> 58(2327): 49-82., available online athttps://www.biodiversitylibrary.org/page/7290135 page(s): 67 [details]
basis of recordBank, R. A. (2017). Classification of the Recent terrestrial Gastropoda of the World. Last update: July 16th, 2017.[details]
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