Traits taxon details
original description
(of Helix leidyi J. Hall & F. B. Meek, 1855 †) Hall, J.; Meek, F.B. (1855). Descriptions of new species of fossils from the Cretaceous Formations of Nebraska, with observations upon <i>Baculites ovatus</i> and <i>B. compressus</i>, and the progressive development of the septa in <i>Baculites, Ammonites</i>, and <i>Scaphites</i>. <em>Memoirs of the American Academy of Arts and Sciences, n.s.</em> 5(2): 379-411, pls. 1-8., available online at https://biodiversitylibrary.org/page/14284668 page(s): 394, pl. 3, fig. 12 [details] 
basis of record
Evanoff, E. & Roth, B. (1992). The fossil land snail <i>Helix leidyi</i> Hall and Meek, 1855, a member of a new genus of Humboldtianidae (Gastropoda: Pulmonata). <em>The Veliger.</em> 35(2): 122-132. page(s): 125-129, figs 1-7, 9-11 [details] Available for editors 
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