Traits taxon details
original description
Sterki, V. (1909). Descriptions of two new American Pupidae. <em>The Nautilus.</em> 22(10): 107-111, pl. 8., available online at https://www.biodiversitylibrary.org/page/1743626 page(s): 107-108 [details]
additional source
Nylander, O. O. (1909). Shells of Aroostook County, Maine. <em>The Nautilus.</em> 22(12): 143., available online at https://www.biodiversitylibrary.org/page/1743664 [details]
additional source
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): 970 [details] Available for editors 
additional source
Nekola, J.C.; Chiba, S.; Coles, B.F.; Drost, C.A.; Proschwitz, T. von; Horsák, M. (2018). A phylogenetic overview of the genus Vertigo O. F. Müller, 1773 (Gastropoda: Pulmonata: Pupillidae: Vertigininae). <em>Malacologia.</em> 62(1): 21–161. page(s): 45 [details] Available for editors 
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