MolluscaBase name details
original description
Easton, W. H. (1962). Carboniferous formations and faunas of central Montana. <em>United States Geological Survey Professional Paper.</em> 348: 1-126, 14 pls., available online at https://pubs.usgs.gov/pp/0348/report.pdf page(s): 95, pl. 12 fig. 36 [details]
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