Traits name details
original description
Vaughan, T. W. (1896). A brief contribution to the geology and paleontology of northwestern Louisiana. <em>Bulletin of the United States Geological Survey.</em> no. 142: 11-65, pls. 1-4., available online at https://books.google.com/books?id=vPE2LS1LuSQC page(s): 34, 50, pl. 2 figs 7-8 [details]
basis of record
Vokes, E. H. (1966). The genus <i>Vasum</i> (Mollusca: Gastropoda) in the New World. <em>Tulane Studies in Geology and Paleontology.</em> 5(1): 1-36. page(s): 4, pl. 1 fig. 1 [details] Available for editors 
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