(ofPhysa saffordii I. Lea, 1864)Lea I. (1864). Descriptions of twenty-four new species of <i>Physa</i> of the United States and Canada. <em>Proceedings of the Academy of Natural Sciences of Philadelphia.</em> 16: 114-116 [after 25 April 1864, before 30 June 1864]., available online athttps://www.biodiversitylibrary.org/page/1942708 page(s): 115 [details]
MolluscaBase eds. (2021). MolluscaBase. Physa niagarensis f. saffordii I. Lea, 1864. Accessed at: https://www.molluscabase.org/aphia.php?p=taxdetails&id=1544250 on 2024-04-27
original description(ofPhysa saffordii I. Lea, 1864)Lea I. (1864). Descriptions of twenty-four new species of <i>Physa</i> of the United States and Canada. <em>Proceedings of the Academy of Natural Sciences of Philadelphia.</em> 16: 114-116 [after 25 April 1864, before 30 June 1864]., available online athttps://www.biodiversitylibrary.org/page/1942708 page(s): 115 [details]