Say, T. (1825). Descriptions of some new species of fresh water and land shells of the United States. Journal of the Academy of Natural Sciences of Philadelphia, 5(1): 119-131, available online athttp://biodiversitylibrary.org/page/24657165 page(s): 124 [details]
MolluscaBase eds. (2021). MolluscaBase. Physa ancillaria Say, 1825. Accessed through: Costello, M.J.; Bouchet, P.; Boxshall, G.; Arvanitidis, C.; Appeltans, W. (2021) European Register of Marine Species at: https://vliz.be/vmdcdata/narms/narms.php?p=taxdetails&id=990025 on 2024-04-20
original descriptionSay, T. (1825). Descriptions of some new species of fresh water and land shells of the United States. Journal of the Academy of Natural Sciences of Philadelphia, 5(1): 119-131, available online athttp://biodiversitylibrary.org/page/24657165 page(s): 124 [details]