MolluscaBase name details
original description
(of Helix perspectiva Say, 1817) Say, T. (1817). Descriptions of seven species of American fresh water and land shells, not noticed in the systems. <em>Journal of the Academy of Natural Sciences.</em> Philadelphia 1(1): 13–16, 17–18., available online at http://archive.org/stream/journalofacademy01acaduoft#page/n21/mode/2up
page(s): 18 [details]
basis of record
Stearns, R. E. C. (1900). Fossil land shells of the John Day region with notes on related living species. <em>Proceedings of the Washington Academy of Sciences.</em> 2: 651-660., available online at https://www.biodiversitylibrary.org/page/8872727 [details]
additional source
Vanatta, E. G. (1903). Notes on some shells from North Carolina. <em>The Nautilus.</em> 16(9): 106. [details]
additional source
Baker, F. C. (1897). On a collection of mollusks from Grand Tower, Illinois. <em>The Nautilus.</em> 11(3): 28-30., available online at https://www.biodiversitylibrary.org/page/1774602
page(s): 30 [details]
additional source
Johnson, C. W. (1900). Some notes on the land shells of western Florida. <em>The Nautilus.</em> 13(12): 141-143., available online at https://www.biodiversitylibrary.org/page/42800047
page(s): 143 [details]
source of synonymy
Pilsbry, H. A. (1948). Land Mollusca of North America (north of Mexico). Volume II Part 2. <em>The Academy of Natural Sciences of Philadelphia Monographs.</em> 3: i-xlvii, 521-1113. Philadelphia [19 March].
page(s): 608 [details] Available for editors [request]